LLMs are in essence an attack on the concept of written language, harvesting and dissolving the social contract that underpins it; it is no longer safe to assume that text has intent, let alone content, simply because it is grammatically well-formed.
Perhaps the most darkly amusing consequence of this particular mania is that by poisoning the majority of our information environment with hallucinated slop, we have likely crippled the next several generations of machine-learning techniques before they're even invented! Small, locally-hostable LLMs will rattle along spewing spam long after the broader "genai bubble" pops, and building clean training datasets will permanently be more difficult and expensive.