Most of the original posts on the subject should still be on my blog: https://arotaro.tumblr.com/
In short, voidpunk is an aesthetic. It's not a kin type, it's not a gender or sexuality or anything like that- Certainly, one can incorporate it into their identity or vice versa, but ultimately that is not what it was intended to be. It's a way for people who face dehumanization (on a social/cultural level, as in being dehumanized by others) to speak out about it while having fun. It's not about "I feel that I'm xyz thing rather than a human", it's about "Oh, you think I'm not human because xyz? Fine, maybe I'm not. What will you do now?". It's about punk rock with cat ears and demon horns, you get what I mean?
I don't say any of this to disrespect therians or otherkin or anything else along those lines. Certainly, there's a lot of those in the voidpunk community, and I support them very much! It's just that... I mean, those are things that already exist. People keep trying to make voidpunk into essentially just otherkin with a lot of nebulous talking about "the void" (I don't even know what that means tbh! The 'void' in voidpunk was chosen because it sounds cool), when that's not what it's supposed to be. Of course the politics and the support for people who face dehumanization are a key part of voidpunk, but as an identity it's never been super serious and should not be treated as such. It's literally just about cheering yourself up by wearing cute ghost earrings, or whatever.