The people who buy ink by the barrel (figuratively speaking) HATE President Trump. That will not change when he is out of office. Books will be written by the score, bad-mouthing him personally, politically, and as President.
The worst of it is, when it comes to international relations and trade, they just don't get it, and he does. So he will not be appreciated for at least a couple generations, if then.
And I have no doubt that he is personally a scoundrel, egomaniac, and has the attention span of a housefly. But judged by what he is doing and what he is trying to do, he is a superior President...best in my lifetime (since 1949).