The number one problem that the modern Thoroughbred faces is the negative end of the placebo effect.
A startling number of people forget a horse is a horse. Breed generalizations would be nice guidelines if they were accurate, and as of right now most aren’t. The “look-at-what-I-can-do-I’m-amazing- I’m- a - trainer” crowd exploits stereotypes worse now than ever before. The added exposure of social media broadens the audience of people they can find that actually believe their crap, and naturally the lies and exaggerations are repeated, and spread by more inexperienced riders and continues exponentially growth, accelerating a problem that has been a growing issue in recent decades.
“LOOK AT ME on a TB!!! I’m really good!!!”
Unfortunately these are the sort that most knowledgeable people have come to associate with the TB. I piss a few of them off every year when rehoming horses that we retire from racing. I can spot the kind and rarely are they a good fit for ANY young horse, regardless of breed.
Every breed will face some bias. Fact of life, don’t take it personal. Every breed will have good and bad examples, plenty of each. Luckily most WB registries appreciate a nice horse, and will allow one of substantial quality into their books. The intelligent folks care about the quality in the individual horse, and that will never change.