@CoubousAndTourmaIet Eris will be coming! The restaurants we go to tend to be dog friendly, so it's a good chance to practice her manners in a new place! It's always a nightmare trying to find holiday cottages that allow so many dogs, so we always go to the same place when we go (I say we, this is the first time DH has been able to come in about three years...).
100% agree re. these behaviours. The only time I will be able to 'accept' a dog bite is when a dog has been tormented, or had it's boundaries repeatedly ignored, and it finally snaps. And usually it's only ever one bite (as I see so often in the rescues we get in).
I am, like you, increasingly seeing people normalise their dog's behaviour and it is actually terrifying. I think people seriously under-estimate the amount of damage a dog - even a small one - can do. And it's never acceptable to think your dog's antisocial behaviour is normal because of 'some' circumstance or external factor (like wind or being in a communal space). And normalising it, and thus allowing your dog to intimidate people, is unacceptable.
I've always said, if one of my dogs bit and the vet could not find a reason for the bite (pain, discomfort etc), I would put to sleep. I would spend every penny I have to try and find something, but if there was nothing to be found...how could I trust that dog again?
I think we are different to lots of other people just because our dogs are bigger so the risk is greater if they did snap. But I don't think size really makes a difference - a bite is a bite. And, as you say, reactivity is very different to aggression.
Tbh, mumsnet does a very very good job of reminding me why I am so strict about who I do sell a dog to. Lots of people, who seem to think they know a lot about dogs and are good owners...really aren't.