As another example I don't expect girlfriends to understand much about computers or be genuinely interested in the apps I write. I don't need a girlfriend to talk shop with, that's not what girlfriends are for. It wouldn't be a negative, but really wouldn't be a positive much either.
That said, I don't expect a girl to study Star Trek or anything (and, btw, was this article written 15 years ago? I don't think I know anyone who watches Star Trek.) just in order to get references to it. This is really a pretty stupid article that seems to have been written by someone whose greatest exposure to geeks is watching The Big Bang Theory.
I used to go to "gaming" stores 15 years ago to play tabletop wargames, collectible card games, board games, etc. You'd have the dads who just treat it as a fun hobby and are "normal", but you did have the occasional unwashed, overweight individual with a shabby graphic t-shirt. I briefly played a Star Wars CCG for its mechanics, but there were die hard Star Wars fans who would go on for minutes on random bit characters.
My friend works for BioWare as a creative writer. We both love our video games. Mine are cleverly concealed behind a veneer of mid-century and contemporary modern furniture so you don't know they exist. He has a 10-foot screen and front projection setup with a 1kW surround sound setup that he has no intention on tidying up. I only play about 5 hours of games a week now. He still can play for 30 hours a week on a regular basis.
I played World of Warcraft for 5 years. I ran and participated in some very hardcore groups including former FoHers and had several friends in a world Top 25 guild. I prefer a computer to be compact and dead silent, whereas some of my comrades feel a large box with a 600W power draw and sounds like a jet engine is perfectly normal. One was a big DIYer and a very sharp guy... but you'd swear he subsists solely on CLIF bars. I remember getting called out by him for stepping away to finish a proper meal.
I have a few Miyazaki films, but I've known anime fans that have no qualms about having rather vulgar figurines of female characters in skimpy clothing, walls covered in posters, etc. And they're going on 30.
I had a friend who collected DEC hardware. He honestly has a working MicroVAX cluster running on DECnet, three DEC Alphaservers, amongst other things running in his apartment. Probably a dozen operational computers, running 24x7.
I could go on and on. R/C cars. Model trains. Slot cars. Operating systems. In every group, you had always individuals that took it to an extreme, and boy do they stand out. Because they stand out, that's who and what is remembered.
(In fact, I'd reserve the phrase "very offensive" for things way nastier than a joke article on the internet.)