I agree that it definitely doesn't read like a straight tale of horror and abuse. But I don't see how can you sum it up it by saying "he found some good practices" when he takes care to point out, for example:

Everything is Urgent (but takes forever)

Sounds like a grind, day-in, day-out, with lots of made up stress.

Unfortunately, the majority of my time is spent doing “program” style work which leaves about 10% of my time for technical work. Ultimately this is not what I want to be doing with my career.

So the work sucked basically. And definitely wasn't what he was expecting.

One of the projects I was assigned to had an engineer who had never done web development (didn’t know HTTP, HTML, CSS or Javascript) was tasked with doing the front end system design for a React application (and the API that would power the UI).

Standard sweatshop practices, sounds like.

Oh and did we mention on-call? About which he says:

To be blunt: it sucks.

Which (among other reasons) is why he quit after 10 months. Which is definitely not a step to be taken lightly, because (aside from losing on the compensation) it basically amounts to a resume stain.

Now of course he said positive things as well, and it wasn't a simple condemnation of Amazon, by any stretch. But still -- it strikes me as rather strange that you are somehow able sum it up as "he had good things happen to him there" and it was a "succesful outcome".

To my ears, his experience there read like a very mixed bag.

My paraphrase of his report would be: "You learn a lot there, but it's a grind that will suck you dry before you know it."