Yeah, I think this entire debate is uninformed hysteria and manufactured outrage. "If an attacker has administrator access, they can see everything you have done on your computer!". OK? That has literally always been the case? "Attacker is root" is game over and always has been. The original writeup from DoublePulsar tried to justify that Recall is somehow different from other such scenarios, but I found it totally unconvincing.
I think it's the right move to have it off by default, but I'm just not convinced by the outrage here.