First world problems like no other...
We're talking about highly paid professionals working at a rather cushy job all things considered. It's like listening to rich kids complain about having blue M&M's touching the red M&M's in their bowl of candy.
Nothing in this whole bit of drama is shocking other then I'm not quite sure why Amazon is being singled out. All of the complaints made are systematic problems in any large corporation. The workplace isn't there to hold your hand and to be your own personal playground. In Tech, you have to earn your place every day and Amazon seems to make it clear that is the case (leadership principals, talk of hard challenges, etc). I would expect to be "managed out" if I showed up every day expecting to coast through with the bare minimum - who would want to work at a company where that is acceptable?
Boycotting the company as a customer is also pretty funny to me. The chief competition is Walmart - are the activists going to order from them instead? How is that any better ethically?