

I don’t think it’s rude. I’ve been in many places where people just don’t make needless conversation. We interact just fine overall. Specially if you go to some place like southern California. Just Seattle in particular is a lot like the UK not only in weather but in social grouping. People in the UK also don’t needlessly interact.
Also the barista may not want to talk to you but they are forced to nicely interact because they’d lose their job if they told you to go away.