To me a lot of this is less a question of whether we’re asking too much of horses (which I’m not discounting, I ask myself that question daily since I’m sat on a horse that my trainer believes has the athletic ability to run Intermediate at minimum and I’ll have to make a decision about how far is far enough one day) and more a question of whether people know their own limits/are able to resist outside pressures to keep going when they shouldn’t.
Most of us aren’t Michael Jung (all of us aren’t Michael Jung except for Michael Jung, lol). He makes a 5* look like he’s skipping around a playground. There’s a lot of people out there who can’t even make Beginner Novice look that way. Should they be moving up? No. Will their trainer tell them that, if they even have one? Quite possibly not. I know Michael wasn’t in KY this year, but I can imagine that watching him over that course would have made it look entirely different than watching someone who scratched due to being entirely out of control try to take it on, and that goes all the way down to the lower levels.
There’s always going to be more to do to make the sport safer, and discussions to be had about what qualifies as an acceptable level of risk, but, in my opinion, a lot of it just goes back to that endless refrain about how just because you can move up doesn’t mean you should. That’s really not the question with Solaguayre California, because I don’t think Tamie is unprepared in the slightest, but how many cases of falls and injuries (both horse and human) are because people were trying to run a course that they had no real right to be on?
(And then when you (g) have TPTB try to change rules to make it more likely that you are truly qualified to be at the level that you’re moving up to so that we do reduce the risk of injuries due to incompetence, you have half the competitor base angry because they don’t have enough events locally to get the MERs to be able to move up at the top levels. What do we care about more? In an ideal world we’d be able to address both issues, but in the current one, I really don’t know.)