Because its a joke and an insult, to the people who actual put time and effort into designing these coins in the first place, and you should all, as Crypto Currency supporters and believers, feel ashamed for supporting this garbage.
As for this comment, the people who made Bitcoin were happy to make it open source and unleash it upon the world - for the good and the bad. There have been some interesting coins in development lately with features that other coins don't have and are leading the way in next gen altcoins - adversely, there have been literal copy/paste jobs with no effort or additional features or changes.
If you dislike the copy/paste jobs, then simply don't support them and don't mine them. A vast majority of them will die off quickly and wont stay around anyway. Just keep in mind that they do have a place in the altcoin community at the moment and that is why they exist. Whether you consider it a good or bad thing.
