It's entirely possible that both SysV init and systemd suck for different reasons. I'm still partial to systemd since it takes care of daemons and supervision in a way that init does not, but I'll take s6 or process-compose or even supervisord if I have to. Horses for courses.

I want to love s6 but every time I see the existence of s6-rc-compile I get heated. I'm sure there are excellent reasons behind it but I personally don't want services to work that way.