the guy was always a laughingstock
Unless he is simply anti-corruption that doesn't benefit him directly, in case rampant and obvious nepotism is not incompatible with his goal (but, I assume, not what voters were actually hoping for when they elected him).
(1) It's also possible that the Trump family isn't actually as wealthy as they claim to be on paper, in which case being in a position to actually directly influence executive regulatory policy can have significant direct financial impact on their enterprises that they have no opportunity to exploit otherwise. For example, they could have a hand in implementing tax programs while owning significant financial interest in companies regulated by those tax programs (https://www.citizensforethics.org/press-release/crew-files-c...).
The president needs people he can trust. If that means hiring family, I'm fine with that. Other politicians seem to have their kids work for Ukrainian gas companies, which is a lot more disturbing.
Wealth involving real estate is difficult to estimate, but typical estimates are several billion. For example, a drop from 4 billion before the presidency to about 3 billion now is one estimate. This is notably the opposite direction from a typical politician. Increases in wealth are far more suggestive of corruption.
We'll have to agree to disagree, because that is more or less the justification for every system that devolves from meritocracy into capture by a few trusted by connections and back scratching, be it the aerospace partnerships between the military and trusted contractors that exclude less expensive alternatives, the NSA and CIA becoming composed of family members that the agency already believes it has vetted, the Hapsburg dynasty, or the Trump administration.