One of my friends is a Catalan expat in Texas and everyone keeps writing them off as Spanish. They only really call themselves that loosely to not have to explain politics.

It is quite exhausting having to explain every time (and seeing some people's reactions, which sometimes are disrespectful or not believing us) so some people end up only explaining/correcting the people who matter to them and give up on the rest, it depends on each person and how much energy they have lol.