If you think that's racist, the problem is that the hood is so vastly different in this regard than elsewhere, not that they went there to elicit the most fucked up responses.
I think towing the line of "technically not racist" is a rather obvious ploy for their video series.
They happen to be in an 80% black neighborhood (Flatbush, Brooklyn.)
They happen to be involving stereotypes that are in fact associated largely with blacks.
While you or I might not associate these concepts with blacks, the lowest common denominator who would find the idea of such a petty "prank" funny in the first place is far more likely to.
In the context of a conversation between 2 people who know damn well that neither "the hood" or "don't step on people's shoes as you don't know how they'll react" are only aspects of black people I wouldn't jump to assuming racism. In the context of an exploitative Youtube video I would generally assume it's probably designed to be enjoyed by a lot of racist fucks.