No.
It is not.
The movie is pure fiction from the mind of a weirdo.
Once upon a time a bear ate some cocaine. It died.
That is the true story. The true story is a thirty second short.
It is like saying "Armageddon" is based on a true story because a meteorite once hit the earth.
Yes. Sanity!
Yeah, who cares?
Every freakin' movie that comes out today is a comic book, at least Hollywood found something relatively original to film.