I find it interesting to watch some divers going 'elitist'.
In my opinion you can watch that repeat lots of times:
People take some kind of training or dive a a very challenging place and start dropping into 'selective superiority complexes'.
Most of the time they compare all other divers to some ideal and try to get everyone who seems 'compatible' to choose the same way (teacher, equipment, dive-sites,...) to progress, all others are frowned upon.
Very few divers can keep up a humble demeanor after a very small number of dives, 100-150 from my personal impression.
After 500 or so dives every diver is the local hero of some group it sometimes seems, a few thousand and nobody would mind if he behaves like he owns every dive-site in the world - would just be 'expected behavior', not respected, or liked, but still accepted and expected to happen almost everywhere.
GUE diver behavior is a prime example, but locally we have so many 'tec' diving organizations and teachers, it is hard to pin blame on GUE alone.
From personal experience GUE divers in particular are often more open and easy to talk to, but they are exeptionally hard to convince to take part in a normal rec dive.
Sidemounters, in my experience, are different:
The 'older' ones simply never appeared around here, 'nobody' ever knew it existed, even as a cave diving option.
Only exception probably where experienced DIR-Style instructors.
So those diving sidemount here have either given it a second chance with new 'technology' or adopted it recently.
Most of those are 'convinced' it is 'better' somehow than backmount, few dare talk about it that way openly, though.
The ones adopting 'the new form' of sidemount first here where people humbled by seeing their diving career ending because of an unexpected illness or injury, or people like me who like diving but never liked the equipment or some part of the concept of backmount diving - all of them 'misfits', more or less.
Most like me go into apnea diving for a few years at least, but I could not, because apnea is a real 'sport' containing contests, I could never progress there without becoming deeply unhappy with my life.
Anyway:
Sidemount divers are different from other 'elitists' and to varied in their motivations and training to put into the same simple categories.
Most are very humble and quiet and have some fundamental personal reason to be.
Those are not the worst traits to have at a dive site.
Because of that sidemount divers in general are harder to criticize than other elitist divers.
This leads to a lot of funny situations with 'dive site trolls' using 'triggers' in conversation they expect to work with every tec diver and react baffled when those just do not produce the desired reaction constantly.
New sidemount divers often try to imitate that from the beginning.
I think some even realize that this is one of the things that convinced them to try themselves.
Sidemount divers as a whole are well regarded, individually often admired but make a lot of personal enemies sometimes.
I have learned to be rather wary of the phrase 'Your trim looks great, but...'
Personally I do not have other sidemounters to imitate and made a lot of beginners mistakes socially.
I have seen an open fight break out only once when I lacked the experience to avoid that but have also learned since.
Without the internet I am sure I would have avoided a lot of bad experiences in the surface intervals, I would most likely also have never heard of sidemount without the internet - so I don't mind
On the internet we have a competely different situation:
Someone talking about sidemount is often attacked aggressively in either personal messages or more often openly and often continued later in some other discussion.
It is impossible in some forums to even mention sidemount without the topic soon becoming exclusively sidemount related.
But this post has become long enough anyway and I have to go collect my spare drysuit, so I will leave conclusions to you.