Even if that wasn't the case, why assume bringing up gender is an attempt at being edgy in the first place? If anything I think that speaks more toward Internet culture. On the Internet we (in the collective sense) tend to assume gender talk is an attempt by people to get attention.
The song as a whole has a rather psychotic tone and the video and has a fair amount of overt, edgy stuff going on unrelated to gender identity, like that woman peeing in a parking space for whatever reason. When I see themes of gender identity represented in a song like that, I think they're trying to be edgy with it? I mean, I don't find a video with people in drag edgy because I'm actually accustomed to it, but it seems clear it's supposed to be revolutionary or unsettling in its own right when everything else in the video kinda is?
I actually didn't know this and that sounds horrific. I think the assumption on my part was that this stuff's less controversial in Sweden than it is here as that's the vibe I usually get from Europeans. Sorry!