Well, sorry for bumping this dead thread. I was browsing through nightcore-related posts on other forums, websites, Youtube comments, etc out of boredom but I felt the need to report my findings.
I agree with what Fernandez and Hko2006 has been saying, many people see nightcore as only a meme/audio effect/simple action like Alvin and the Chipmunks (or chipmunking).
Some of the posts gave a reason on why the poster doesn't see nightcore as a genre. The most common reason I saw goes along the lines of "Nightcore is just speeding up a song. I could do that in 5 minutes. It's lazy and uncreative."
I thought I'd try to counter this argument as well. My rebuttal is below:
Many genres (especially in EDM) got their start from a simple edit (i.e. speed up, slow down, etc). For example there is a genre called
moombahton. The genre was created by simply slowing down Afrojack's remix of Silvio Ecomo and Chuckie's song "Moombah."
Heck, look at rock and roll during the 1950's (when there were no computers, internet, or nightcore). One could say that rock and roll was originally sped up blues.