Genesis Mining seems legit for now, as I've found good proof that they actually have a sort of like a GPU farm on a huge warehouse and not just make money through schemes like HYIPs. The only question is, is it profitable? I personally don't think so. The only reason you see YouTubers shill GenesisMining is just so you use their referral link.

If you really like to make money through mining, buy some good GPUs and or ASIC miners.