@xvln best use case for llm text from everything I observed is propoganda. It's looks natural and as if you having conversation, but really it just use your irl time to argue with sophisticated bot. Scammer that orders your art then to lead you to send money first to check if your bank legitimate. Politics where intent to either convert or waste your time on telling why argument is wrong (also extra time to check your sources and provide them as well). Sell offers on AliExpress and other cheap market where they will use LLM to have believable translation and sell you LLM art that you only see is wrong after receiving and paying attention (that time when you wish they stole it instead... Which they done but smear it in shit on top).
So LLM is useful if you know what you doing and only check for errors... But that's not how LLM used right? It's a slap on feature and heaven for scammers to destroy and undemine anonymity be it soft,art, orders online, foss, online debates and many more.

There whole ecological and industrial impact (price on GPU/hard drives hey ho!).

People build houses using asbestos, well here your digital equivalent of that.