Feel free to only visit 2.5 star restaurants on Yelp because clearly that must just be disgruntled people disproportionately for no reason.
I'm not saying I think I'm right in this case but I also am not saying I think websites like blind/ratemyprofessor/etc accurately reflect how the general population actually feels
Going by the Yelp restaurant review example, perhaps the people who rate a restaurant are either very satisfied or dissatisfied. In the case of Amazon ratings on Blind, it seems that no one is willing to advocate for the company.
Aside from that, the toxic work culture of Amazon and their high attrition rate has been well-known for years and years and famously reported in NYTimes etc.
Didn't Bezos say something like if anecdotes and data disagrees, its the anecdotes that are usually right?