I wonder where the center of the hobby is on balance. We obviously from this and other threads have people on the side of mathematical balance to various degrees. And we have the opposite as well. We also have the UA which, as the OP indicated, shows that 5e's players don't care as much - or at least don't seem to - as one may have thought.
Makes me wonder if balance is a large indicator of what system you like. I would guess that 5e's detractors like a more balanced game when compared to 5e's enjoyers - on a general level. I think the opposite is, likely, true of Pathfinder 2's players.
I largely agree with you on the "good enough" comment you made earlier in this thread, where for most players it just has to be "good enough." But I do wonder if importance of balance is a signal as to what system you end up preferring. And if the UA votes are because the balance lovers have found other systems leaving 5e with a more balance agnostic player base.