Good for a lot of people, actually.
Instead of just playing “Hunt the Papist” try to go read up on some of the real live heresies over the centuries, and realize just how much they could have screwed things up if they’d been allowed to fester.
The first century works for me.
Anyone can read up on the wonderful Catholic teaching that took place in seven churches in the first 3 chapters of Revelation.
History has shown they didn't have ears to hear.