Yea I knew meta was toxic, but publicly beefing over something over a decade ago is a whole other matter. I can’t even remember what I was working on 10 years ago, and even if I did I wouldn’t be bringing people down that much later.
It is their loss, I cannot imagine letting a minor work quarrel live rent free in my head for over a decade. I feel bad enough when something is stuck in my mind for a week.
On a more serious note, it seems like any hyper competitive company eventually spirals into an awful, toxic working env.