Unemployment :)

If you're able to make a program into a sort of puzzle concealing its state inside a twisty maze of tiny virtual functions so it's impossible to see plainly how anything is done, then you become indispensable as the only one who's internalized how the thing works.

And then you insist it's all for easier comprehension… for those sufficiently intelligent to comprehend it.

Even more new clothes for the emperor.

If the average programmer didn’t use ‘clean code’ techniques they would end up with crazy spaghetti, not the fast and clear code shown in the video. (the average programmer is not on HN and can’t do fizzbuzz)