I think humorists often get the wrong idea that because something is outrageous or shocking it is automatically more humorous. Humor has an element of surprise, but being offensive is not part of that.
These talented boys could take a lesson from P.G. Wodehouse instead of Howard Stern.
I think the dichotomy is effective. You normally wouldn't expect much value from something with rude dialog, toilet humor and crude animation, but there underneath is serious social satire on par with the best.
BTW, the crude animation is on purpose. They had to tone-down their high-speed digital animation software to get the crude-looking effect.