Can you list the complaints with proofs you are talking about?
You could easily find it yourself by searching this forum properly, but I will share some links since you're clearly way too lazy to do that. Check them out extensively.
https://bitcointalk.org/index.php?topic=5363791.0https://bitcointalk.org/index.php?topic=5267919.0These are just a couple of examples. There are many scam accusations against this site which have been piling up over the years which is why their reputation is in the gutter and it will most likely stay that way in the future in my opinion.