Beside the word "solicit" the definition you deliver applies 100% to that website. So why do you think it does not follow the definition? The returns come from new investors. It requires a constant flow of money. It will inevitably collapse at one point.
The website does not imply "little to no risk." It explicitly states that it's a Ponzi scheme, which clearly means that you're gambling on not being the last one the party.
Disbursements from ponzi.io are not purported to be investment returns or legitimate income of any kind. There are clearly other people's contributions.
