The point shouldn't be to wake people up to "Q", should it? The objective seems to be waking people up to the world around them. IF "Q" is a way to spark curiosity, that's neat!
Regarding security measures: I can imagine that asking attendees to turn their shirts inside is done with the intent of protecting the President (and everyone else) from assholes who would, say, want to do something crazy and scapegoat "Q" folks.