You can interact with cgroup usage with systemd just fine. There is an wiki page describing this. Now the kernel is changing the API, systemd is following.
If the current API or the new API is not good enough, do the reasonable thing and reach out. Kernel people reached out to systemd. The systemd people reached out to figure out who is using cgroups.
Obviously you can just complain on the sidelines mumbling "evil", but documented actions by kernel and systemd doesn't reflect any evil doing.
Further, cgroup controllers are optional in systemd currently.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds