But LLMs aren't advertised as some future thing. They're advertised as being almighty and replacing devs in great numbers. And that's simply not true. It's a fad like 3D movies
I know they are pumped and overhyped to death, indeed they are. But that does not mean that they already have some use today and that they can (or not) improve in the future.
I'm skeptical about LLMs as well but I also wanted to see what they are actually capable of doing and I vibe coded an Android app in Kotlin (from scratch) with Claude Code and Opus 4.5 and it basically worked. I'm pretty sure the code is horrible to the eyes of a Kotlin developer because I added so many feature by asking CC to do it over the last 2-3 weeks that it already desperately need a refactor.
But still, this is not something an autocomplete would be able to do for you.