Understand what you're trying to do and your concern for what's inside the wall.
As I see it, that method will squash/crush the wall as you tighten. Those metal studs in the wall are very thin steel.
Have to agree with those that suggest going the toggle bolt method.
"Toggler" are the best I've ever used. Best of course is to bolt/screw into the center of a wood stud, but if that's not possible, those Togglers work great into wallboard alone.
See the Toggler video below.
SNAPTOGGLE Toggle Bolts - YouTube