Yeah, he 'appears' to --- that's the key phrase.

He's GOT a whole lot of high end horses, so naturally a lot of 'high end horses' come up w/injuries for him.
Just like McPeek 'ruined' Repent, right?
How about Tempera --- are they 'ruining horses'?
How many horses start the triple crown trail, and how many finish?
Is it because all these trainers are butchers?

Obviously, when you've got more horses, and more horses in the spotlight, you'll have more injured horses, and it'll be more noticeable when you do.