Fill in the blank

Courtesy of my previous post, let's play fill in the blank with this quote:

"There's an unfortunate inward-looking, comfort-zone loving… aspect to some in the [genre:] community that is preventing the imaginative genres becoming the literature of now…"

The ellipse hides a descriptor that would give the game away.

What genre do you think the poster is talking about? Would you change your answer if I told you the poster was a science fiction author? Would you change your answer if I told you t...