I am aware of these, yeah - "Microsoft Edge scrolling personality" is only for touch scrolling gestures as far as I can tell, it doesn't affect scroll wheel scrolling for me.
I've disabled smooth scrolling in Edge because of this, yes.
I've disabled smooth scrolling in Edge because of this, yes.
Nor scroll to top/bottom via the Home/End keys. In Firefox (or Chrome for that matter) it's quick enough that I don't mind the smooth scrolling, but in Edge it's comparatively and disconcertingly slow.