So your family member learned what he should have known before. That Trump should never be taken at his word, I won't say he worked for Trump so serves him right. Oops. I don't really mean that, but you get the drift.
On his presidency: Trump put himself and his family ahead of the country, so he violated his presidential oath.
He totally screwed up the defense against pandemics established by previous presidents and left to him by Obama. Then he downplayed the seriousness of it, then stuffed the domestic response to it. The result American deaths from Covid will likely hit the million mark.
So that's two reasons why you could never say validly Trump was a good president.
An important third was Trump's effort to subvert American democracy by not accepting the result of the vote in the last election he lost.
I wonder if you will examine your position at all on the merits of his presidency when, as
is likely, Trump replaces Harding at the bottom of most if not all the presidential merit lists
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”