Playing through what? AIR?...I see Squiers and Epiphones on TV all the time.
Do you even know if the guitars have severe expensive mods? Set up by pro guitar techs for hundreds of dollars?
And TV is often about lipsyncing, pretend playing, editing, etc. So it's a very poor example. You might as well say someone in a video was using a Squire, so I'm sure you can get a great "pro sound" from it.