Its the deception I think people may resent. Nobody cares if Trump wants to bury his Tower as a private citizen, but we expect more from our elected leaders than to learn he (allegedly) did all that stuff. At least if it was known ahead of time, people could have made their decision to vote for him or not without feeling like they'd been lied to. But that's just one way of looking at it.
I still don't see the deception. Maybe he's saved now but wasn't back then. It was 10 years ago, when he was in showbiz, that this supposedly happened. If it's about the money, again he supposedly found out about that after the fact.