I see inability to admit fault as a core aspect of the collective therapist mindset.

I think it's necessary to preserve illusions, because admitting fault brings the therapist down to the client's level. And this reveals the contrived social hierarchy that underpins the game.

It's also classic narc behavior. Or just a sign of deep insecurity.

There are exceptions but I can't count how many stories i've read where a rupture sent a therapist into a near-psychotic frenzy of client blaming. Happened to me as well.