The right has been villainized for a very long time and for good reason. Left-leaning people discovering that their side is just as bad and untrustworthy when given enough power is, I believe, the reason people are pointing it out. The left were supposed to be the good guys. You don't begrudge the scorpion for stinging as much as the frog that promised would lead you to a more fair and just land, only to carry you to scorpion island.
The left (or at least the fairly broad swath I'm acquainted with) has been mostly hostile to crypto and skeptical of "effective altruism" for years. I don't know anybody on the left who would have identified SBF as "one of the good guys" before this all came out; "yet another tech bro who thinks he knows how to save the world" is more like it.
I've only ever heard of left-leaning publications that find excuses for him. Maybe individuals you are acquainted with are as you said but that wasn't what me or parent were talking about
