< Looks like it's time for distro hoping!
Is runit here to stay on void, or is it going to loose support in a couple of years? I can't claim to know enough about init systems to have an opinion on the whole systemd debate, but I have the sense that it is inevitable, so I should just "get with the program" is development continuing in those alternative init systems?
runit is here to stay
I don't know a lot either. I use runit in void and openrc in alpine and both are fine.
The last stable release of the program was in 2014. However, since it is a simple program that only performs one task and is nearly complete, it requires minimal development. In void some patches are added to runit occasionally.
last patch was added 10 months ago (Apr, 2023).
If you want to try void I recommend to check if the programs that you want are available
https://voidlinux.org/packages
After you have installed void, install 'xtools' and 'vsv'
sudo xbps-install -Su xtools vsv
This allows to install anything using the 'xi' command. 'xlocate' allows you to see the name of the package that contains any file (even if you haven't install it yet). 'xls' allows you to see the files of any package.
sudo vsv
Displays all active services.