Firstly, you didn't buy anything from eBay, as they don't sell anything.

Secondly, eBay is far from useless. They offer excellent security for buyers through their MBG. You making a personal choice to not use the MBG reflects poorly on you - not eBay. Is there any legitimate reason for not following correct procedure and instead just doing your own thing?

Thirdly, if you choose to buy rubbish from Chinese sellers, that's entirely your choice. If you buy Chinese rubbish, you get Chinese rubbish. What exactly were you expecting to receive?