[CFrance]

I think it depends on the personality of the dog. We could take our golden to restaurants in Europe but rarely did so, unless it was outside. Most did not have a lot of room, and he struggled a bit to fit himself in. Even though the restaurants allowed it, we mostly left him at home, with a couple of exceptions. (He liked sitting outside for after-dinner wine.) We wouldn't take him into big crowds for his own safety.

Our rescue beagle mix is skittish around noises. So no go to any outdoor gathering with her. Walks and dog parks.
Most people know their dogs. If I saw a big dog in a crowded situation, I would assume the owner knows the dog is good in that situation, knows how he will act. Was that big dog the OP saw jumping up on people? Truly freaking out? Really, I've never seen a dog jump up on strangers in outdoor markets or other venues. I can't think of one time I've seen that. I give people credit.

As for anthropomorphizing pets, I have to mention this: we anthropomorphize many things, God included. So what. Does that mean we're crazy or something?

Finally... I may not always have a husband, but I WILL always have a dog. (Although at 52 years together, husband is pretty safe.)