can we get rid of.....!!!

[Brightamethyst]

I wish we could talk to NPCs without dismounting

That's probably more to do with how NPC interactions work. So many conversations are basically mini-cutscenes, with gestures and emotes and stuff, that it's easier and less confusing to disallow mounted conversations altogether than to let you stay mounted for some but not others (probably can't talk to NPCs while sitting for the same reason.)