Allow me to pull a common LDS tactic/trick: That's not official Catholic doctrine...checked off by The First Popery and the Quorum of 12 Archbishops and 70 General Authorities (otherwise known as nuns, the true behind-the-scenes leaders :) and unanimously sustained by every Roman Catholic everywhere & then printed in the Roman Catholic new scriptures, "Roman Catholic Doctrines & Covenants"...
There are also Plenty of protestant churches with equally damning statements about anyone who is not e member of their church, I have yet to see you broadside any of them, care to ping me to a few posts in say the last month where you do? If so I will publicly apologize for misjudging you.
But seriously, there is one "serious" note of distinction in my graph above, one that also applies to your "Protestant" church reference here (tho I don't personally know of what Protestant churches you even reference...I mean pulling that response out of a hat is like me citing some obscure LDS break-off group & then tying that to LDS). Anyway, here's the big difference: What I reference is LDS "Scripture." What you reference re: Catholics is informal Catholic beliefs...and perhaps a few past Pope statements that would amount to no more of a doctrinal level than Brigham Young's blood atonement or Adam-god doctrine. And the same is true of whatever Protestant churches you refer to: What scripture are they citing?