That's true, though its still a pain if you do actually use 5 to 10 groups (cough "Nixland") and have to turn them all off and back on individually just so that you can test fire one group.
Its not worth arguing the point with Godox at them moment though. I'm working on the X2 design suggestion at the moment, and am strongly suggesting multiple groups can easily be selected then, switched on and off, or power level adjusted together.
So you can test fire one group, or as many as you have select quickly on the one LCD screen just by tapping their group button to select them. The same with global power control, adjust which ever groups you like together.
Also suggesting an ALL button, which will select (or switch on) all groups at once, or non, or the groups you previously had switched on or selected. Just as another option to speed up group selection etc.
I think I remember someone suggesting this many months ago! But no one ever listens to me.