I don't get it. This is a job application and you're trying to make a good first impression. Complying with their requirements is the first step towards doing that. A lot of people don't have the freedom to pick and choose their employers based on their style of humor. You know what a lot of people don't want to hear? "lol this part of the application is annoying"

"humorless individual not worth working for."

I probably have 10 other things I consider before taking into account my employer's style of humor. Not to mention, the person (machine) looking at your application may or may not be the person you're going to be working with. So, by doing this, you're potentially filtering yourself out based on an algorithm or temperament of an HR person. The idea that this necessarily represents the quality of the employer is kinda strange.