Fridge Brilliance: If one watches "The Funniest Thing You've Ever Seen From Really Far Away" with the volume turned all the way up and the image zoomed in, you might decide "no, that wasn't the funniest thing I've seen." But you likely haven't seen many skits take place from very far away. Therefore, it's the funniest thing you've ever seen from really far away.
Due to just how strange the Do The Flop Guy's story is, you might not notice that the song is a vague retelling of the stories of many real life viral stars. Do The Flop Guy becomes famous on accident and the world becomes obsessed with his bit. When he tries to break away by doing a variation on it, he is unsuccessful and ultimately can only make his fans happy by doing the same thing. Of course, the context is completely bizarre.
The Deliberately Monochrome stick-figure look serves the material brilliantly because anything more complicated would distract from the utter weirdness of the jokes. The look isn't what matters, it's the jokes.