Yeah sadly the reviews on websites like Amazon are a lot of times completely meaningless. I know some brands that give away free stuff for reviews (I'm amazed it's even allowed) on certain tech websites and forums. I mean if you give people stuff for free then it rarely happens they will be negative about it so it's basically paid shilling (being paid with a "free" product).

Also a lot of consumers who "review" something do it almost immediately after purchase. Especially with low quality cheap crap that means you will never know if someone is still satisfied with it after a few months since most people don't bother to redo their review "it's only 20 euros".