Ah ha, I see – yes I had in mind actively doing stuff to undermine the team after the person has left (on the benign end, deliberately doing a crappy job of documentation; on the malignant end, stuff like data destruction). I will make this clearer in the post, thanks!
> - The notion that you should have loyalty to the team beyond your last paycheck.
It made me sad to read this. You don't have to be loyal to your team, of course, but your framing makes me think that you've never been in a position where you've wanted to be loyal to your team, long-term.