After a huge screwup this morning due to me messing up part of my automation system so it restarted the wrong display manager, this gives me a far safer way to restart the correct display manager.
That was three hours of my life I’ll never get back, purely due to my own multiple stupidities.
And I am using greetd and greetd-tuigreet because it gives me the option of launching a given command e.g. bash which - when in connection with a unified kernel - makes it great for troubleshooting as the system is almost 100% guaranteed to boot.