If you read the article carefully, the author criticizes Catholicism.. He rejects traditional Christian doctrines based upon the fact that evil people have done terrible things in the name of Catholicism. Are you surprised that the devil would do just that? Of course he would. No wonder the Vatican today is completely run by freemasons.
Constantine did not invent Catholicism (like Jehovas Witnesses like to claim). In fact, he was an Arian. He didn’t believe Jesus is God.
If Christianity is true, then why would Jesus be for having a secular state rule over the Church and not the other way around?
The comparison to democracy is therefore valid. I have left Rome but not Catholic Tradition. You don’t get to be a pope just because you put on the hat. When you publicly reject Catholic teachings before your papal election, you don’t become pope. People mix Catholic doctrine and satanic impostors all the time.