Current AWS engineer here. I've been working here for ~2 years in a pretty critical service, in the Dublin office
Back when I joined the company, you could already find dozens of online reviews talking about a toxic culture and awful management practices. I was about to turn down the offer because of that. 2 years later, I have to admit there have been good and bad moments, but if I had to make the decision again today, knowing everything that I know after all this time, I would 100% still accept the offer.
Amazon improved my life and my career in ways I would have never expected. When I look back, it really seems unbelievable to think that I've improved so much as a software engineer in that period of time. And not only on the technical side, but also on aspects like writing, caring about customers or thinking about operations: you realize that work is much more than coding or shipping new features. Besides, from its culture I've learned processes or ways of thinking that have incredibly helped me even on my personal life, like "one/two way doors", "working backwards" or "mechanisms over good intentions"
I'm not going to pretend that all the other comments are lies and that all of that did not happen. Obviously there's a lot of people with really bad experiences at the company. But what I'm trying to say is that Amazon is a huge company, and you can find both great and awful experiences. If you're considering applying here, or even accepting an offer, don't get discouraged just because here you find mostly bad opinions.
In case it helps, something that convinced me to join when I already had the offer and had to make the decision was talking with my future manager. I directly mentioned that I found reviews about a toxic culture and wanted to know his feeling about it. His answer was simply "Look, I cannot talk about other orgs, or even other teams. What I can say is that in my team we really try to create an inclusive and healthy environment, and that we really care for each other". He could have just lied and said that all the reviews were fake, that the culture was great and that all those problems did not exist, but he was honest and admitted that he could only talk about the areas that he knew about.
To me that was a good reminder that even companies like Amazon are formed by normal people, and that while there will be people that only care about themselves and getting promotions, there are also some that really care about making the company a great place to work