Well, LLMs are an engineering breakthrough of the degree somewhere between the Internet and
electricity, in terms of how general-purpose and broadly-applicable they are. Much like them, LLMs have the potential to be useful in just about everything people do, so it's no surprise they've dominated the conversation - just like electricity and the Internet did, back in their heyday.
(And similar to the two, I expect many of the initial ideas for LLM application to be bad, perhaps obviously stupid in hindsight. But enough of them will work to make LLMs become a lasting thing in every aspect of people's lives - again, just like electricity and the Internet did).