The reason we chafe at this is because those opinions usually distill and treat us as a singular group. Like one of us saying “the British believe,” for example, prefaced behind something the Welsh and English disagree on.
Not your fault, though. Our internal borders are meaningful. We lie to ourselves that they aren’t, and the rest of the world goes with that. Minnesota, Michigan, and Mississippi may as well be different countries for all they have in common.
It’s ironic that you did exactly what I mentioned is the problem while responding to a comment where I pointed out I’m aware of, and sensitive to, subtle cultural differences within Britain. I’m at least n=1 for giving a nuanced shit about people outside our borders, but that didn’t fit your reductionist narrative. I get it, but I don’t respect it.
Not your fault, though. Our internal borders are meaningful. We lie to ourselves that they aren’t, and the rest of the world goes with that. Minnesota, Michigan, and Mississippi may as well be different countries for all they have in common.