I fall into the “don’t really care, I’ll do what makes life easiest” camp, but I have to say that I have sucked a bubble into my brakes (open system levers, lever pressed when bike upside down) and it also seems to affect my coil/oil damping in the very short term (first 30 seconds or so) so I don’t bother. That said:
It’s usually very easy to find and fix a puncture with the wheel still QR’d in place, since the invention of disc brakes.
It’s perfectly possible to balance a bike right way up without damaging anything, using nature found all around you.
I don’t care what others choose to do, whatever works for them.
I dislike scratching my bike bits, especially expensive ones, for no reason. A crash is fine, but to scratch them through ham-fisted stupidity seems criminal – if I have to flip it, I’ll do it on grass/foliage.