You will know income level of the customers when project will be done?
LoL, great question. If they use A.I. in their webpage I also hope that they can find out how much income their each potential investor/trader has

That's a bit demanding, requesting the income of the project . You can determine if the project is gaining by looking if they have achievements, goals that reach and more projects to lunch. I think it is a but privacy. That is only my opinion.
Haha, I also think the same, requesting ones income to determine success might not exactly be the way to go about it. Previous investments etc can be one option to judge. That's what I think