I'm not quite sure it is a binary choice though --- make WDW resorts dog friendly or put your dog(s) in a kennel.
When our dogs were much older we'd hire an in-house dog sitting service (where they come to your house and your dog doesn't have the stress of travel or being in kennel.) In 2016 I think we paid $25 per day per dog to have someone come around dinner time and feed them, then take for them for walks and play and then sleep over and feed/walk/play with them in the morning. A neighbour came at lunch to let them our and play a bit also. We have also had dog sitters that would dog-sit in their own house rather than a kennel. There are many kennels that offer things like video streaming so you can see what your dog is doing. Family, friends, etc... are options as well.
In most cases people want to bring their dogs just because they want to -- and they really don't care if others are allergic, have extreme dog phobias, don't like the barking noise, or just don't like sharing space with dogs for cultural reasons or cleanliness reasons. With the rates that Disney charges for their resorts (particularly YC), I don't think it is unreasonable for people to expect that their vacations should be free of the disturbance of other guests pets. (Legitimate service dogs are different as they have been properly trained and they won't be left for hours alone in the hotel room.)