Linus had an epic flame war with the systemd idiots for breaking Linux stupidly: https://igurublog.wordpress.com/2014/04/03/tso-and-linus-and-the-impotent-rage-against-systemd/

He didn’t do anything because he made it clear he owned the kernel and userspace was someone else’s problem, but also that the systemd guys were absolute morons who were a danger to themselves and everyone else.