that whole excommunication thing led to protestants.
Discussion
Protestants also do excommunication. That is why there are so many different ones.
You can even excommunication yourself.
Protestants do so much protesting, most Protestants are not, IMO, actually Followers of Christ. But neither are most Catholics or even Orthobros.
It's a hard path because we have to continually die to ourselves. I kinda hate that, but there is no other way but to trust and obey, to quote a pithy hymn.