Most of the approvers are baked in and have nothing to do with objective reality, i.e. they’d approve of him no matter what he said or did, however awful, because they like what he says and stands for, and, well, they’re mostly privileged white racists, like him, preaching the prosperity gospel (which is basically be white and you will be rewarded). The rest are basically ignorant, lazy and undereducated non-entities who follow the herd and have no critical thinking abilities or the desire to acquire them.
If any of the first group abandon him, it’ll likely be because they felt that he wasn’t sufficiently racist, nasty and disgusting, and not because he was too much of these. But the second group’s approval is far more tenuous, and he could lose it if things continue to deteriorate and it’s clear that he’s why. You’d think that would have happened already, but with the media largely taking it easy on him for fear of his and his supporters’ retaliation, I can see why not.
Perhaps the solution is to stop waiting for the media to do its jobs, or even Dems, who too have taken it too easy on him, and for everyday people who realize how horrible he is to stop taking it easy on Trump supporters, especially the more “casual” ones, and enlighten them as to how awful he is. Some people need to be hit on the head to get it. Perhaps it’s time to hit them?