You can alias it to whatever you want, but the name is reasonable in context. machinectl is the interface to systemd-machined which is used to manage the host system, containers, and virtual machines in a consistent way.

I've got a bunch of RHEL systems at work and I've just aliased all the -ctl commands.

If you want to open a shell on a container you would run "machinectl shell my-container-1"