In my experience, an artist's original style arrives more or less from the artist having imitated and subsumed bits and pieces from other artists over the course of their artistic pursuit.

It isn't beautiful at all, nauseating uncanny valley stuff in my opinion, but AI images do have a style (or rather one of a number of idiosyncratic styles.) The sort of glossiness and unsettling focus in photorealistic images; the terrifying dreamlike surreality of more impressionist graphics; even the cartoony style used in corporate infographics. They're all quite distinctive to me at least and certainly aren't anything a human would produce. You can see the "influences" (i.e. stolen training data) but it really has come up with something itself.

Not that I think it should have. Kill it with fire and EMPs.