Funny, when I was in my 20s and not British, I knew what a Dalek was because it was just part of the zeitgeist. Tricoders are frequently mentioned as one of the life imitating art type of things that modern tech is striving to take from sci-fi to IRL. I had never even seen an episode of Dr Who, but I was familiar with it because of all the other sci-fi/nerdy stuff I was into. Ironically, I did know what someone wearing an H on their forehead meant from watching Red Dwarf, but that’s a tangent. It just seems like a strange Venn diagram where source code android and Star Trek tricoder do not intersect would be a very odd diagram

The age makes sense, but Swedes are definitely into Star Trek https://en.wikipedia.org/wiki/S.P.O.C.K

I think you're underestimating how Americanized Swedes are.