I think it will be the opposite - that people who need service dogs will get to take them (for free, there is no charge for a service animal) and people will know that it a true service dog and not someone gaming the system.
My friend who is training a service dog has had push back from restaurants that she can’t bring the dog in because it is not (yet) a service dog. They are correct and by law she can’t bring the dog in training in. However, I think the restaurant and other stores have relaxed the rules too often for ESA or just pets that people want to take into stores and restaurants and this business said “Enough! No animals except service dogs.” That where the airlines are now (service dogs okay, all others are pets and have to pay)