It's not, these guys just suck and they don't have the first clue how to actually operate their vehicles. I can fit my full sized truck into spaces just fine when I have occasion to drive it. They all think they're hot shit for having back-in parking "skills," too, while utterly failing to comprehend that all they've accomplished here is making it impossible to load anything into the bed. You know, like what trucks are for.

(Postscript: So obviously, they're not planning on putting anything in the back. Which means they could have just as well all showed up on Vespas.)