I feel like maybe you’re misinterpreting people not wanting these practice rounds at events as being “unwelcoming”. A welcoming sport, to me, is when I show up and people greet me with a smile and introduce themselves. If I have a disaster of a round, someone says “Hey, I’m sorry that didn’t go so well. Better luck next time!”. I’m volunteering at a schooling event tomorrow, and the volunteer organizer has been just beyond kind and helpful in getting me involved, despite not having a barn I belong to here yet. Being welcoming doesn’t have anything to do with my ability to place at an event. There will be mean, snotty people, everywhere you go - at some point, you really do have to learn to ignore them and focus on you and your goals and how you can achieve them and find the people who support you.
Accessibility (which is what I think you’re actually arguing for) is a real struggle for many in this sport, especially the western US, but 1) a single practice round IME has fairly short-lived benefits (meaning, it has its greatest effect on the day of) and 2) shouldn’t necessarily be the end goal. If I can’t swim, but want to compete in a diving competition, should they allow for a division that lets you dive with a life jacket? It would certainly make the sport more accessible! Especially for people who don’t have regulation diving pools nearby!
For what? Some perceived ‘spirit of evening’ concept?
Well, since the “spirit of eventing” doesn’t matter, let’s just get rid of jumping. Or maybe dressage. Or both! Better yet, just let competitors choose what parts of the competition they want to participate in! No good at dressage? Skip it! No good over XC? No worries mate! Horse spooked at water? You can just trot around it, no biggie. Horse only turns left? Just ride a circle in the ring and walk out. Can’t afford a horse? You can just enter the class and jog all of your tests and parkour over the fences. Obviously, I’m poking a bit of fun, but without a purpose, intention or direction - what I would call the “spirit” of every sport - what’s left?
As far as good horsemanship - I’m just not convinced this is really a great argument. Is making your horse jump not one, but two jumper rounds on competition day (after running XC/dressage) “good horsemanship”? I mean, is it terrible horsemanship, nah, but I don’t think it’s as strong an argument as you make it out to be. A horse doesn’t care if their score is a letter or a number - the riders do. Winning =/= horsemanship. There are many riders who I would say have wonderful horsemanship, and rarely place. There are also riders who have abysmal horsemanship, who take home many ribbons. IMO, no matter the sport, competition day is not the time to practice or train - it’s the time to SHOW what you’ve been working on for the last however many months/years/etc.
If I can at least offer some support to those people, I will.
Again, there are so many other ways to accomplish the goal you want. Support people by taking them to training days at local venues! See a kiddo over there who can’t afford to do more than one event/yr? Sponsor them at the next event! Someone at your barn who can’t get out to school XC? Offer to let them borrow your trailer (or go with them!). Get a group together at your barn to come up with fun jump decoration ideas! Subsidize a half-lease for a teenager who can’t afford it. Donate old competition clothes. Help teach a rider how to desensitize their horse!
^^ That’s welcoming AND good horsemanship - without making any changes to competitions.