Your original point was that the claim that "Amazon working conditions are great" is not factual, i.e. your original point was "Amazon working conditions are not great". I don't see any mention that "paid tweets from employees are not the best source of truth" in your original comment.

I agree that we should take paid tweets by employees with a large grain of salt, but I also want to point out that you likewise have essentially 0 evidence that they're not telling the truth, apart from random surveys and a few investigative reports, most of which are about warehouses halfway around the world.

I think it's import to remember that, like Amazon, journalists also like to appeal to a certain narrative (how often do they report about the amount of Good Amazon has done for the world?).

A pattern of a few (potentially based) data points is hardly a pattern.