"Amazon" may not, but the manager, VP, SVP etc may. Careers aren't made by having the right skillset. They're made by having the right set of contacts. YMMV
Sure, but someone leaving on bad terms (especially if they’re relatively junior) isn’t super likely to be one of those people eh? They call it ‘burning bridges’ for a reason.
There are new people entering the industry all the time, they don’t necessarily need any one given individual again ever.