First of all, he's more than cool with TayTay borrowing his namesake:
I think Calvin Harris and Taylor Swift have made an awesome song; the pseudo is hilarious.
He's not the only Nils in Sweden...
I haven't been contacted by Taylor's reps, and that's totally OK. There are a couple of us here in Sweden with this name, even though I haven't met any in person yet.
Rabid Swifties infiltrated his Tumblr page, with his civilian blog getting thousands upon thousands of hits in a few hours.
Page Six also points out that while it's still unexplained why Swift chose this oddly specific name, "Sjöberg says the journalist who told him about it suggested it was something Taylor and her Swedish friends in Los Angeles had come up with."
I guess every A-list celebrity has a band of random Swedes ready to consult them about lifting identities.