Is it really “telling on yourself” if it’s a statement of what we openly and explicitly believe?

Most Leftist beliefs are built upon a handful, or large amount, of foundational beliefs that you must hold for them to work. These foundational beliefs to them are reality itself, so of course everyone must hold them. Those who don't aren't worth even talking to because they are crazy.

Its why its impossible to reason with Leftists. Your opposition to them, in their eyes, is built upon denying reality. And if you aren't crazy, you must be doing it intentionally for evil. Whether its to trick them or simply to cause damage, either way you are a monster they must now destroy.