It Upsets Me Whenever a Book or Website About Cults Excludes Roman Catholicism from Its List!

I remembered reading several books on various cults but it upsets me on how often Roman Catholicism is so left out in those books. What's the problem? I remembered Walter Martin's book "Kingdom of the Cults" and what... no Roman Catholicism mentioned? Isn't Roman Catholicism the world's largest cult? I felt really bad when I found that out. I was able to get a wealth of information from that book but I was upset it doesn't contain anything about Roman Catholicism. Although Martin himself had debates with the Jesuit priest Mitch Pacwa, I was wondering why didn't he include Roman Catholicism in that same book? Only a few books ever bother to call Roman Catholicism a cult. It upset me even more to find out that some influential preachers in Christendom even called Roman Catholics as brothers and sisters in Christ. When I was newly saved, I thought I could reform the Catholic Church but found out that it's impossible. That's why I dropped T...