Without someone actually saying as such, we only have stuff like emdashes and specific word patterns to go by. And someone even moderately vested in hiding AI in plain sight will coach the LLM to use common vernacular.

And with LLMs making blog posts as diss tracks... damn, who knows what this world is coming to.

But the whole "Only Humans, we dont serve YOUR KIND (clanker) here" is purely performative.