It's probably more noticeble/annoying while playing with less resolution, where everything is huge, even with items in the HUD on 60% normal size. Like I said before, I don't really mind, because i just don't use the flying text, but if i had an option to instead of flying up/down, there would be a "pop up 1-2 secs, then fade" option without the text going up/down, It would be easier to check that my buffs/actions/etc actually went off, instead of having to watch the action bar, chat bars, buffs/debuffs bar, etc.
But that is just prefernce I guess.