I understand what it is. I'm just wondering why.
The code is also not immediately available, which makes claims towards any chain of trust somewhat dubious.
And I'm not sure what purist really means in this context, and how a rolling release is - or even implies - inherently "pure" Unix. If systemd is the hill to die on, Void is active and supported.
Usually I default to encouragement; I don't mean to put any water on OP's fire, yet there's a whole lot of grand words in these essays. And really not a lot of explaining why any of this would make me switch from, for example, Arch, or that explain which problems are being solved.
It's Void with GUIs around runit and xbps. The problem being attempted is that Void is not very accessible to users new to Linux. This is pretty clear from the website.