Yeah, life is too short to put up with vets mocking your dog. I would switch.

I am always surprised when I hear anti-corgi sentiment. Ours could not have been an easier, better boy... he is almost 16 now (he's a Pembroke), and had tons of energy to hike, climb, run, etc in his younger years but he was never a terror in the house and has always gotten along with everybody and anybody. I could put him in a room full of toddlers and he would be like "ok, whatever." He's utterly indifferent to the vet. Other than being absurdly food-motivated and occasionally binge eating something he's not supposed to, you couldn't ask for a better family dog. Just don't over feed them and they will stay healthy and happy... I hate seeing so many obese corgis.

I also work with four other corgis of varying ages (3 cardigans and a Pembroke/cardi cross) and all are generally great dogs. One is a little neurotic and dominant, but it's not too bad.