Since you state this as a fact you presumably have
something to back it up.
It's not up to us to prove they're a ponzi, it's up to them to prove they're legit. If they were legit, they could quite easily prove that and end these allegations of being a ponzi but they choose not to do so. Why? Because they're a ponzi.
If you want to throw your money at some dodgy company instead of a company that's proven it has hashing power, or even more sensibly, a company that is also an ASIC manufacturer, then that just makes you a fool and anyone who listens to you is an even bigger fool.
Don't you think it strange that the only people supporting these ponzis are new users, whereas most the established users here are claiming they're ponzis?