They help me most when using a framework, API, or language I'm not super familiar with. Beats stack overflow for that stuff.
But it's weird to me seeing people talk about these changing their jobs so much. Maybe I'm holding it wrong but I'm almost always bottlenecked by "big picture" challenges and less on the act of actually typing the code.
My GH copilot kept recommending incorrect things when I use it along side common libraries and frameworks, I don't know, I just don't really find it very useful.
That's because programming isn't just about syntax. The real difficulty lies in the problem solving. Sure AI can help with that, but the problem still largely rests on the programmer, as AI won't do anything unless prompted to.