How does this glib remark contribute anything? There are much more useful ways of defining playing God than being so inclusive as to have all of human existence in it. (See my definition below.)

It's not glib. It's a polite way of saying, we are gods, and we are not playing.

Cool, hi new god. Coffee machine is broken again over here, could you use your godlike power to pop an ice coffee on my desk? Thanks kindly.

You are a god too. Fix it yourself.