I can't claim to know more than you; but I think I know enough about corporate america and Meta and Zuck that the idea of multiple lawyers, instead of just one, is at least plausible.
You'd be surprised. They banned Christopher Wylie from Facebook. People routinely report their entire team (building some product for Facebook) getting their accounts banned
Zuckerberg takes things personally. It's his entire history
He's extremely petty and fhin skinned. Remember the seat booster?