@OP When you have continue session on, closing Firefox using burger menu->Quit restores all windows. I assume this will also keep the pins even without continue session.

Nope, this feature has existed forever. They just changed the shortcut, previously it was Ctrl-shift-T for re-opening the last closed tab and Ctrl-shift-N for re-opening the last closed window.

use their ads-machine on fediverse

How would that part work?

Also, if they did join the fediverse, that would significantly reduce user lock-in to their site - which is why they won’t.

But if he hadn’t had cancer, both being killed and committing suicide would be random. So why would the randomness point to him being killed?

How would him being killed after 20 something years be any less random than him committing suicide?