When do we get to call Trump a dictator? When he ignores court rulings? When he floods the zone with illegal executive orders? Do we have to wait until he calls himself a Dictator and insists everyone else do the same?

If you are criticizing Trump, did you have any credibility with that part of the public to begin with?

Not saying there aren't reasons to avoid name calling. But I feel like battle lines are fixed by now. I don't feel like "Good point" is a likely reaction to anything said by anyone.

if so, how is it that Trump's approval rating (and disapproval rating), has shifted by more than 10 points since he took office?

https://votehub.com/polls/?subject=trump&time_adjusted=true

The only poll that matters is the election. And despite some of his voters disapproving, there is very little chance of them voting for the opposite party.