of course it is.
A greasy spoon and a ritzy diner are both restaurants.
I don't think there should be anything special about being published. And I don't care how many "hacks" get into it, because no matter how many people say something stinks, there's gonna be Someone who likes it. Everyone's got a right to be published. The internet just provides a way for those who aren't "good enough" to be published by Publishers, or those who can't break in to the Publishers' nice little l33t circle.
There's nothing special about being an artist. Anything that's got a soul can be an artist.