Yeah, he could easily bankroll a 36 month severance package or something similar. Like "sorry I fucked you right at the onset of a recession, here's a pile of cash to help you weather the storm." That would be actually taking responsibility
He lost $90B. I'm not sympathizing with Zuck, but what you're suggesting literally happened.
But he wasn't punished - people demand blood and blood can only be given non-voluntarily.
He was punished by the market. People want more blood than that and some people will literally never be satisfied