When I go to Home Depot, im not typically picking out produce or buying food items to feed my family. Sorry, but there is a difference. I take my pup to Home Depot all the time, but shes well behaved, trained, and i prepare in advance to ensure no accidents indoors (like a fucking adult). ITS ALSO HOME DEPOT POLICY TO BE DOG FRIENDLY.
The type to take their dog everywhere, is likely not the type to make sure they have done their business and wont bother anyone else with their behavior.
I wouldn't take my dog to HEB for innumerate reasons, and I cannot see a good reason to take a dog inside a grocery store beyond its what "I wanna do and its my baby and i cant leave it alone!". There is a literal rule against it, and these people are violating that by using the cover of folks that actually have a physical need for a service dog. It's shitheel behavior, and again, not about the dog itself.
Although those little yappy cunts can get absolutely fucked. Get a cat instead.