Well, I can kind of understand the caution, although typically speaking only really cheesy Batman villains make their bombs look so obvious (The whole point of a bomb is that it doesn't draw suspicion until it...well, does.)
I somehow doubt that it's Super Mario that they're talking about when they bring up violent crime and murder simulation, mind you. Unless...unless they're concerned about the drug use?! My god, mushrooms and money are distributed in boxes, many of them hard to find, such as the invisible ones! Mario is an addict!
And...and maybe he hit his girlfriend, so their mutual friend Bowser is hiding her in his apartment! And...Mario doesn't know what apartment complex he's in, because he's too drugged up to think clearly, so he's sneaking into eight separate buildings, pretending to be a plumber, and going on a violent rampage, systematically checking each room and terrorizing the inhabitants before burning the building to the ground!
Luigi represents his hallucinatory, Fight Club esque alter ego. The Minus World represents him completely losing touch with reality.
The Beanstalks represent beanstalks.