There are a lot of things in the horse world that have as much value as time honored tradition as they do for functional value.
I've been an aspca advocate for 15 years, and believe me if I see a worthy cause I fight for it. But my dogs are all microchipped and tattooed. My goats were all tattooed.
Gelding a horse hurts too. Should we ban that?
I think the need to search for a cause sometimes overpowers good ol' common sense.