I've noticed a definite difference in cultures/perspectives between two general groups I'm associated with. I can't speak for all hikers or all climbers, of course. However, I have noticed that the folks I personally know who are more climbers than hikers, or who routinely do serious mountaineering (the likes of Rainier, Denali, glacier travel, etc.), do not expect the hiking trails to be smooth snowshoe paths, and they don't expect to have to create a packed trail for others. The attitude is that these are the mountains and one should come prepared for all conditions, and that if one expects smoothed-out paths, then one might want to stick to groomed trails.
Some (not all) of the hikers I know who routinely hike the Whites feel that all should avoid making postholes whenever possible and that folks should use snowshoes if they find they're making more than a footprint without them. That leaving postholes damages the trail for others and creates serious and unnecessary hazards (such is the attitude expressed on this thread).
Depending on one's perspective, both sides make sense. I'm not convinced there's one "right" answer.
I'll wear the 'shoes if I'm in danger of postholing. If I'm leaving a footprint but not a posthole, then I'll continue to bareboot. However, I don't share the opinion that everyone else should wear the 'shoes just because I think I should. I do think everyone should at least carry them, though, in case they lose their way and unexpectedly find themselves in deep snow.