You're being wound up, no-one really hates wide beams, ok maybe the odd one or two, but not hate in the real visceral sense, most people who encounter wide beams on inappropriate waterways are irritated by them, it's just an issue of space and of course any widebeam driven in a selfish or stupid way becomes an obvious and easy target.
No one cares about widebeams on appropriate waterways but where they mix on borderline wide canals they do create issues, much of which could be blamed on canal maintenance as much as anything else.
The aesthetic issue is just opinion and doesn't really matter in the grand scheme of things, if you like your boat that's all that matters and let's be honest most narrowboats are not exactly things of beauty in the first place