Ultimately, this problem goes beyond Disney...hence all of the headlines about things like the previously noted emotional support peacock and that support hamster that the girl supposedly flushed. I don't think anything will change unless the ADA has a hand in it.
Our most recent trip was the first time I really noticed a lot of dogs that made me wonder if they were truly service dogs (like yorkies and cavaliers being carried by hand or in pet strollers in the parks), but we saw something a few trips ago that still has me scratching my head. Has anyone seen service poodles in Epcot/France before? It looks like there are CMs involved, but it was just so bizarre to me. These were just a couple of them (there were more), but I'd never seen anything like this in the parks and didn't know the purpose...nor did I want to ask since people can get pretty hot if they think you're questioning the legitimacy of such a support animal.
I can believe the standard poodle as a true service dog, but the toy (and other toys and miniatures) had me scratching my head.