Service animals are medical equipment my dude. It would be as immoral as claiming someone can only go to rehab if they give up their insulin or their wheelchair.
It really depends on if it’s an actual service dog or one of the emotional support animals.
You probably still won't get it, but replace "dog" with "kid" or "friend" and say that sentence again. That might give you a sense of how attached a lot of people are to their dogs.
Let people have something. Let them have one persistent thing that they care about and care for. It’s a dog.