Yeah, this is something I wrote about even when I made my thread about trying the Grymforge final boss for the first time in patch 7:

at some point you find yourself having to juggle between toggles for your reactions so frequently (which is STILL far from ideal control over them) that it makes the "annoyance" of dealing with Solasta pop-ups trivial and smooth to deal with, in comparison.

For how "crude" having a text pop-up may be in terms of presentation, it surely beats having to fight with the multiple tabs of your UI for multiple characters at once, going back and forth between switching things on and off.