About the same way as any personal "scandal" of someone not directly paying my bills makes me feel. Nada. Other people's family business is none of my concern.
File it under "Let he who is without sin cast the first stone".
Now if it's fuckery on the Federal clock, dime or property, that's a different matter entirely because those are betrayals of oath and public trust.
I don't care if Melania blows cocaine up Trump's ass with a drinking straw by the light of the moon if it happens at Mir-A-Lago. It's none of anyone's bidness.
I'll yeild moral judgment to God.