To be fair, you have to have a very high IQ to understand Neo Yokio. The humor is extremely subtle, and without a solid grasp of theoretical physics most of the jokes will go over a typical viewer's head. There's also Kaz's nihilistic outlook, which is deftly woven into his characterisation - his personal philosophy draws heavily from Jaden Smith tweets, for instance. The fans understand this stuff; they have the intellectual capacity to truly appreciate the depths of these jokes.