A good point raised by the author showing how necessary our humour is for us. Happiness and sense of humour both promote a healthy environment and a healthy body. And as it well said, 'A healthy mind dwells in a healthy body,' we can't ignore the fact. A person who is having a healthy mind may come up with something really good, enthusiastic and optimistic.
I agree that a new category may add boosts to our creativity but at the same time I must say that instead of jokes if the category may be renamed as comedy genre including short fictions but original would be good.
However I would also like to impose a question here," How many people do really post in entertainment, amusement etc sections ?"
If you are posting a thread under such sections you are getting two or three responses that too not every time. Many-a-times people post by looking at the name of the person who has posted it. If a good author they reply if not they don't waste time in reading however better thread it would be.
I simply, by all these, want to draw your attention to the fact that many categories are there which are not being utilized completely
judicially and judiciously. In such circumstances if a new will be created it would be used for a month or two and then ?
Leaving the question here for you to answer.
Let's enlighten paths with the ray of knowledge.