The problem is the people who do agree there are serious issues with certain breed traits aren't the sort of people you (i.e. dog lovers) need to convince. The Kennel Club drive me to absolute bloody despair over things like this:
https://www.royalkennelclub.com/health-and-dog-care/health-dog-care/health/getting-started-with-health-testing-and-screening/respiratory-function-grading-scheme/
"From 2026 onwards, all Bulldogs, French Bulldogs, and Pugs with a Grade 2 or Grade 3 RFG Scheme assessment will not be eligible to attend Crufts."
Quite frankly, the fact they need a sodding scheme to determine just how much a dog suffers is problematic enough. Grade 1 - which they will still allow to show - still means the dog is affected, and obviously if that dog is then bred with another Grade 1 it's hardly going to improve the breed is it?
No animal lover buys a dog that was bred to suffer, or breeds a dog that suffers, IMO - and as long as those people exist, they will continue to do all they can to have dogs that look a particular way. Stop breeding pugs/frenchies/dachshunds etc, they'll just find another breed to destroy.
If I am completely honest - and I probably will get slammed for this - there is a tiny part of me that would rather they carried on destroying pugs and dachshunds rather than those breeds being eliminated. If only because, as I said above, once those breeds are gone those people will set their sights on something like a border terrier or poodle and destroy that breed as well. They'll find a way to get the deformed animal they want regardless of any laws that are imposed. Just like how people find a way to justify puppy farms.
I do, however, disagree with the idea of not breeding dogs just because they don't have tails - for some breeds there is a genetic mutation (Aussie Shepherds) that means they don't have tails. And in working dogs that can be necessary.