One of the reasons is that, most of the time, LLMs can't do graphics or write prose well enough either; otherwise it wouldn't reek of LLMs so much to people who

One of the reasons is that, most of the time, LLMs can't do graphics or write prose well enough either; otherwise it wouldn't reek of LLMs so much to people who put some effort to read it. Also, even poor writing or drawing can be elevated with some intentionality and personality, and using LLMs pretty much guarantees blandness.