Why all the hate for Vevor?

Reflecting on my experience with Vevor, and how they are quite ok with honest reviews pointing out some of their flaws, and how that, surprisingly, may be a good marketing strategy.
So far have two Vevor products.  The lathe -- which after some tweaking, I'm happy with, and the milling table, which I bought.  The lead screws on it are crap, but I'm actually thinking about buying a second one.