No

> and weren't there speculations that Zuckerberg himself might be involved in it

and no. Meta legal was issuing DMCA notices within days (so, plenty of time for execs, including Zuckerberg, to sign off on, or even propose, that strategy).

> He does seem like a good-ish guy at the most crucial moments of truths.

Does he? I can't seem to recall any particular crucial moments that revealed any underlying character there.