> I've found that some people do argue against LLMs themselves (as in, the tech, not just the usage). Specially in humanities/arts cycles which seem to have a stronger feeling of panic towards LLMs.

Maybe?

The person I responded to said "LLMs are just a concept, an abstraction."

Were that true, were they simply words in some dusty CS textbook, it's hardly likely that the humanities/arts people you describe would even know about them.

No, it's the fact that these people have seen regurgitated pictures and words that makes it an issue.