You know, if I went in a pen full horses, and you asked me to pick some fast ones just based on their phenotype, that old gray would be way down my list. He also appears to be drug free (like you could tell from a 4 minute video). I didn't notice the comments, but I've been in the game long enough to know what people said. Jealousy has an ugly face.
I dated and was married to a drum runner for 10 years and yes, those girls can be brutal. That is a highly trained horse and any one of those people making bad comments would give an eye tooth for it. Looked like socks and boots for the horse hanging from the stirrups.