Yes could, If you're the person who code the smart contract.
If you could just channel this same amount energy and determination into something rather decent, you would be able to come up something that'd would be worthwhile and you can actually be proud of.
Honest and ponzi scheme are contradictory words, in my candid opinion.
I would make use of an escrow if needs be that I must trade with a newbie. However, If it can be avoided, I won't.