"Slop" is generally meant as a derogatory label against anything in the AI vernacular - it is not an objection to clarity, it is a repudiation of the idea of using AI for writing at all.

It's the same tired game we play, as a society, any time a new writing style enters the mainstream. That game goes back to at least Shakespeare's era, where our illustrious bard was called out for his tendency to make up words ("fashionable" being, I believe, an actual example of this?)