Trotsky himself was kinda all over the place with praxis from opportunist to ultra in different times, and various trot orgs are often doing the same. Not always, but often.

Some Trots are, but even traditionally sharply critical trots like Cliffites (who will call AES "State Capitalism") will at least pay lip service to critical support. In practice....they're often too far on the critical and too short on the support for that to hold

That said a lot of groups traditionally considered "ultra" like Councilcoms, Left-Maoists of the "Little Deng" type, even some An Syns have supported AES while also being sharply critical. It's Mostly Bordigists and Gonzalists and individual groups that have gone to the "Bad Crazy".

I think some would call them that, though it depends a little bit on the individual group. I would lump most trots in with ultras personally, as they tend to do all the usual ultra things like spending more time denouncing AES than working on overthrowing capital, and trots especially seem to more frequently abandon their ideals as they get older, becoming "how I left the left" sorts of conservatives.