-Core is the new term for just aesthetics, and I think that’s much more fitting over punk. Though in the case of steampunk, it’s one of the oldest -punks so getting people to swap over to steamcore or something would probably be met with a lot of opposition.
I was aware it was a pre-existing term, but it’s seeing a bit of resurgence, even in music, presumably because the younger generations think they’re inventing things left and right.
What on earth is crust-punk by the way? First I’ve ever heard of that.