Nice. A completely toothless group of people performing a pointless and inconsequential exercise to determine whether someone everyone knows is unethical is, in fact, also unethical for doing this other thing.

I don’t think they’ll find any ethics there

The result will be “Look, he’s even more unethical than you thought, but nothing’s going to happen.”

Before you rush to blame yet another investigation for not bringing any consequences to Trump, this isn’t an actual regulatory entity and they have no authority to enact consequences anyway.