Whoa, there are some gross generalizations here.
There is a recessive gene issue with Dalmatians, but “Many are deaf” is an exaggeration and flat-out wrong. Breeders do not breed the dogs with the gene and breeding stock is tested.
Dalmatian owners, lovers and breeders all cringe when 101 or 102 Dalmatians is re-released, because we know it means that more dogs will end up in shelters. This, however, is not a Dalmatian-specific phenomenon. It is the same thing as when Frasier was on and everyone jumped on the Jack Russell Terrier bandwagon and a lot ended up in shelters, because Jack Russells, while adorable, are terriers. They bark a lot, they are willful, and they are hard to train. They are not the right dogs for everyone.
The same is true for Dalmatians. They really are not hyper, but like I said, they were bred to run more than 20 miles a day. That is not a dog you can just stick in a backyard! They need exercise. I had to take my pup to an off-leash dog park three times a day until he was more than a year old. I gradually tapered down to twice a day by the time he was two.
They are lovely and loving dogs. Again, as I said, they were bred for war and protection. Like all breeds of that type they require good training.
I’m not clear what the point of the breed-bashing is here. If you are going to do it, though, at least be accurate.