Funny how so many that “understand” go to different Churches....
STOP!
Please use the proper term: they are sect members.
They literally have “cut” (”-sect” or “sect-”) themselves off from the tree of life that is the Church established by Jesus and entrusted to His Apostles, to whom He gave the absolute power to bind and loose (which, duh, means that have the power to pass that power on to others - Apostolic Succession).
Luther supposedly didn’t want to have sects on top of sects, but of course never-ending sects is the inevitable culmination of his apostate heresies.
Luther = the genesis of never-ending sects
Or
appeal to so many thousands of rather DIFFERENT factions, fractions and fractious slices of
the RCC, the RCC Catechism . . .