I think it is a bit childish to call these dressage riders divas per se. Your own local club may have it’s share but that’s different.
Think of the time and money put into acquiring, training and qualifying these horses. It’s simply practical not to risk them unnecessarily. I don’t think any flout and pounce and dramatics need to come into the decision with these guys. When you are someone like Hans Peter M or Ed Gal these horses are your profession, they are what you do and you need to have top level GP horses in your string to keep you in the public eye, in front of the judges, seen as a serious contender. I mean look at the vast amounts of money (VAST) that Glock puts into these horses and other top European sponsors and STILL the Ed’s and Isabelle’s have a fairly short string of GP horses that can go in nail the scores at the highest level. These horses don’t grow on trees no matter how much money you have.
Sure they may have tons of up and comers, but even the top guys “only” (yes only noted ironically) have a few GP horses capable of getting in the top ten. That’s their business, the reason Glock and other sponsors employ these guys - to be out there capable of scoring in the top 10 in any league. Risking your top horses is simply a stupid decision.
Now I adore my horses and I wouldn’t risk their legs either, but that is an emotional decision, my financial future doesn’t rest on showing a sound horse.
i just think saying these folk are being divas is unfair. The dressage world is full of divas, but I doubt these folk make up that number.