I see incompetent people not knowing they've created garbage, yes, but I also see competent people using it as a power tool/time multiplier. Purely in the context of programming, it's like a typewriter. You can give infinite type writers to infinite monkeys and eventually get Shakespeare, or you can give one typewriter to Shakespeare and get more Shakespeare faster.

It's like IDE's and the old code introspection/code completion. It saves time in competent hands.

That said, it also erodes skill. I have seen people very quickly surrender their shallower knowledge to the LLM's, which limits IMHO flexibility and creativity.

Then there's the whole paying a subscription to access your own knowledge black mirror aspect of it all.

I'm not a fan, but I'm not going to pretend like they don't work in some contexts.