Right after that it will announce that it's abandoning Unity for Cinnamon
I hope not, I think Unity is the best desktop linux has ever had (if you discount ignorant decisions like disabling 'dodge windows' and 'Amazon Ads' in the dash).
It would appear you and I have diverged quite a bit over the years. I have gone in the exact opposite direction - I use XFCE
Both chkconfig and sysv-rc-conf are far easier to use.
That's another problem if you are using Ubuntu-based Mint. chkconfig, sysv-rc-conf as well as update-rc.d and BUM are for managing SystemV init scripts. They cannot manage Upstart scripts. So that leaves out things like: cups, avahi, nmbd, smbd, udev, dbus, ssh, ufw, and probably a bunch of others I can't remember. There is no GUI or command line way to control upstart jobs ( other than to start / stop / or find the status on a live system ). You have to edit the conf files directly ( or rename them ) in /etc/init.
I noticed that on my system this Hamachi thingy is not in the repositores. If it's being installed from outside then in all likelihood it will set itself up as a SysV job for compatibility reasons so sysv-rc-conf should work. But if it sets itself up as an upstart job then ....