I Find This Misinterpretation of Matthew 16:18 Really Stupid

Here's a picture of what Roman Catholics put to justify that Peter is the Rock and the Pope. The whole context is written in very simple English yet what's their problem? The Scriptures are spiritually discerned. Sad to say many people today would rather twist the meaning even if it's spelled out clearly for their convenience rather than get the truth.

Let's analyze the context. In the Good News Translation of Matthew 16:18, it even differentiates Peter a rock from the Rock as it says, "And so I tell you, Peter: you are a rock, and on this Rock foundation I will build My church, and not even death will ever be able to overcome it." It shows that Peter is a rock (small rock) but the other rock is a rock foundation. When we say rocks either we think of big rocks which are not rock foundations or we think of rock foundations. The difference is that Peter (petros) is a small rock while the rock foundation is not Peter. Peter is a small rock and nobody builds houses on several pieces of rock. It has to be a rock foundation. 

If that's the case then the church father they honor namely Augustine called Jesus the Rock. Here's a quote by the early theologian Augustine who Roman Catholics regard as one of their own:
In a passage in this book, I said about the Apostle Peter: ‘On him as on a rock the Church was built’...But I know that very frequently at a later time, I so explained what the Lord said: ‘Thou art Peter, and upon this rock I will build my Church,’ that it be understood as built upon Him whom Peter confessed saying: ‘Thou art the Christ, the Son of the living God,’ and so Peter, called after this rock, represented the person of the Church which is built upon this rock, and has received ‘the keys of the kingdom of heaven.’ For, ‘Thou art Peter’ and not ‘Thou art the rock’ was said to him. But ‘the rock was Christ,’ in confessing whom, as also the whole Church confesses, Simon was called Peter. But let the reader decide which of these two opinions is the more probable (The Fathers of the Church (Washington D.C., Catholic University, 1968), Saint Augustine, The Retractations Chapter 20.1). 
But whom say ye that I am? Peter answered, ‘Thou art the Christ, The Son of the living God.’ One for many gave the answer, Unity in many. Then said the Lord to him, ‘Blessed art thou, Simon Barjonas: for flesh and blood hath not revealed it unto thee, but My Father which is in heaven.’ Then He added, ‘and I say unto thee.’ As if He had said, ‘Because thou hast said unto Me, “Thou art the Christ the Son of the living God;” I also say unto thee, “Thou art Peter.” ’ For before he was called Simon. Now this name of Peter was given him by the Lord, and in a figure, that he should signify the Church. For seeing that Christ is the rock (Petra), Peter is the Christian people. For the rock (Petra) is the original name. Therefore Peter is so called from the rock; not the rock from Peter; as Christ is not called Christ from the Christian, but the Christian from Christ. ‘Therefore,’ he saith, ‘Thou art Peter; and upon this Rock’ which Thou hast confessed, upon this rock which Thou hast acknowledged, saying, ‘Thou art the Christ, the Son of the living God, will I build My Church;’ that is upon Myself, the Son of the living God, ‘will I build My Church.’ I will build thee upon Myself, not Myself upon Thee.  For men who wished to be built upon men, said, ‘I am of Paul; and I of Apollos; and I of Cephas,’ who is Peter. But others who did not wish to built upon Peter, but upon the Rock, said, ‘But I am of Christ.’ And when the Apostle Paul ascertained that he was chosen, and Christ despised, he said, ‘Is Christ divided? was Paul crucified for you? or were ye baptized in the name of Paul?’ And, as not in the name of Paul, so neither in the name of Peter; but in the name of Christ: that Peter might be built upon the Rock, not the Rock upon Peter. This same Peter therefore who had been by the Rock pronounced ‘blessed,’ bearing the figure of the Church (Philip Schaff, Nicene and Post-Nicene Fathers (Grand Rapids: Eerdmans, 1956), Volume VI, St. Augustin, Sermon XXVI.1-4, pp. 340-341). 
And this Church, symbolized in its generality, was personified in the Apostle Peter, on account of the primacy of his apostleship. For, as regards his proper personality, he was by nature one man, by grace one Christian, by still more abounding grace one, and yet also, the first apostle; but when it was said to him, ‘I will give unto thee the keys of the kingdom of heaven, and whatsoever thou shalt bind on earth, shall be bound in heaven; and whatsoever thou shalt loose on earth, shall be loosed in heaven,’ he represented the universal Church, which in this world is shaken by divers temptations, that come upon it like torrents of rain, floods and tempests, and falleth not, because it is founded upon a rock (petra), from which Peter received his name. For petra (rock) is not derived from Peter, but Peter from petra; just as Christ is not called so from the Christian, but the Christian from Christ. For on this very account the Lord said, ‘On this rock will I build my Church,’ because Peter had said, ‘Thou art the Christ, the Son of the living God.’ On this rock, therefore, He said, which thou hast confessed, I will build my Church. For the Rock (Petra) was Christ; and on this foundation was Peter himself built. For other foundation can no man lay than that is laid, which is Christ Jesus. The Church, therefore, which is founded in Christ received from Him the keys of the kingdom of heaven in the person of Peter, that is to say, the power of binding and loosing sins. For what the Church is essentially in Christ, such representatively is Peter in the rock (petra); and in this representation Christ is to be understood as the Rock, Peter as the Church (Philip Schaff, Nicene and Post-Nicene Fathers (Grand Rapids: Eerdmans, 1956), Volume VII, St. Augustin, On the Gospel of John, Tractate 124.5).