I would rather not risk my money to that degree. All it takes is some big fud to lose it all on a platform. Say bitconnect, regalcoin, salt or any of those was cracked open and exposed as a ponzi and all similar platforms become exposed by default too.
But they are still working
Until the day they wont, that is the way people get scammed, at first everything seems right and you get your payments and then they disappear and you lose money that is very common among HYIP, I'm not saying this is a scam but it is a risky investment as anyone that knows anything about crypto should know that lending and investing in icos are two of the most risky things you can do.