Elon Musk, the divisive CEO of Tesla and more recently the owner of Twitter (now known as X), is a fierce critic of the AI industry—but now also a deeply invested participant in that very same industry. X’s Grok generative AI product is being integrated into the web and mobile versions of the social network, and training itself on billions of tweets thanks to an automatic opt-in for all users. (All large language model (LLM) AI tools need to be trained on massive amounts of text, which is why ChatGPT periodically releases new versions with an updated core database.) Well, it seems like a const…