There are certainly some toxic teams out there, just like there are in any large org. I think an even bigger factor is the fact that Amazon is an enormous vertically-integrated monopoly that:

- abuses its market position to run competitors out of business

- mistreats its most vulnerable, low-level employees

For many of us, that's a moral dealbreaker. But there are certainly some great teams and interesting projects in the SDE space if that's what you want!