I suppose it's just my knee jerk reaction that porn* is a lesser form of storytelling, regardless of contents. Not actually true, it's a society thing, I think, telling me that porn can't be good. That was the idea with original statement, anyway.
*And therefore being associated with porn makes one a lesser artist.
It depends what your definition of porn is. If it's anything depicting human nudity that is meant to arouse a sexual, or even sensual reaction, then porn is not necessarily a bad thing, or even bad art. Shoot, if that's the definition, then half the stuff Michelangelo did would be considered porn. But I see it as more what we come to know it as growing up today...as the objectification and sexualization of people for one's own sexual pleasure. If that's the definition then yes, porn is a lesser form of storytelling. Shoot it'd be a compliment to even call it a story of any kind.
And by that regard, vanilla is not necessarily porn (although it certainly can be, it just usually isn't). I don't know what Shou's loli stuff is, but I'd be surprised if none if it is vanilla. I mean he probably has cranked out a lolicon porn doujin or two, or few, because that stuff sells well unfortunately.
I dunno it just sounds so bitter going by the first definition. Because then something like this is in the same category as this.