Not bad at all.
Really. People shouldn't be so hard on this. It's only obvious that this was made to be crap on purpose just to show that Mario games can be frustrating.
I thought it was funny because of all the things it poked fun at. Internet slang, the monotonous repetitive game play of the early Mario games, and the pitiful flashes made by idiots with no experience that put zero effort into their work and expect praise.
Maybe I'm going too deep into it, but that's what I pulled from this parody. And thus, I give it a 9/4.
~Kiri