There’s the odd trainer or rider that I’ve seen at shows over the years with this vibe but they’ve been few and far between, and people just know to avoid and then poof we generally never see them again! Hmmmmm I wonder why LOL….what I see in Alberta and actually Canada is most trainers are friendly with each other and because we don’t have that many shows, know each other well! It’s not unusual to have more than one trainer warning their students up over the same fences, chatting at the ingates….and at outdoor shows (before covid) such as TBird, we would have barn bbqs during the 2 weeks at TBird, where a few barns would all get together because the trainers all know each other! I’ve also had my trainer (and vice versa) have another trainer watch my Hunter round if she had to go for a round in the Grand Prix ring that absolutely couldn’t be moved!
Edited to add,the last time I showed in TBird , I met a lovely lady I was showing against in the 3ft3 hunters. She rode with thunderbird show stables and was super happy to have a “newbie” in the division LOL everyone in this A/O division talked to each other while we stood at the ingate, congratulated each other….it was lovely! And when I got up the courage to enter my first derby, that lovely lady cheered me on as her trainer rode her horse! I love riding with amateur ladies….generally we are there to have fun, we all have the same nerves and can all make the same same mistakes no matter how nice the horse and this levels the field and we all realize this!