I think that the trainer dependency thing is an issue in terms of what the rider feels prepared to do on their own. When a student showing in the jumpers (I can’t speak for the hunters) cannot walk their horse in the warm up ring without trainer input there is something dumb going on. I see plenty of riders warming up on the flat and then the trainer sets jumps, talks about the course, gives confidence, etc. before the rider goes in the show ring. After the round the trainer and student can discuss what was good, bad, and so on.
Cool, fine, all of that makes sense and when I have a trainer with me that is exactly what I use them for: help warming up over jumps and with the class itself. But when the rider is standing around waiting for their trainer who has a conflict in another ring, along with everyone else waiting for that class to end or the next one to begin, and when the trainer strolls up THEN the rider starts their flat warm up, well…
Connected to that is how many students wait for their trainer to warm them up and then they go and stand outside the ring and learn the course. WHY WEREN’T YOU LEARNING THE COURSE IN THE HOUR WE ALL HAD TO WAIT FOR YOUR TRAINER TO ARRIVE???
This is something that happens all the time. It’s infuriating for the other competitors who now have to wait even more while the trainer goes through an entire flat and jumping warm up with the client, and then listen to them tell the client the course, and it’s ridiculous. If you cannot warm up your horse so that you are ready for your trainer to coach you over jumps you shouldn’t be at a show jumping any sort of height. If your trainer won’t allow you to warm up your horse on the flat without their instruction, you should reevaluate the program you are in. If you won’t bother to learn the course before your trainer comes to tell it to you the rest of us have reason to be upset.
I don’t think expecting people to know how to get their horse ready to jump is unreasonable, but I see it at all levels, from .85m to 1.20m and up with juniors and ammys. It’s ridiculous.
ETA: There are plenty of eventers I see who could use the services of a trainer at events. DIY is only as good as the Y. On the other hand, most of my friends who event can warm themselves up without trainer input if necessary, when their trainer is at the other end of the venue in XC or whatever. There can be a balance between 24/7 handholding and being completely on one’s own!