You mostly have to ignore these AI solution hopefuls.

They're living in a momentary dream that AI LLM tools will solve all our coding problems. They don't and reality hasn't hit them yet.

I don't know any real seasoned dev who is getting a 30% boost because they installed Co-Pilot. The tools poop out too many errors/fake-garbage to be useful to devs working on battle hardened codebases.

My productivity boost is much more modest than 30% to be sure, but I'm less tired at the end of the day.

The productivity boost for non-seasoned devs, or devs of average skill level or above doing relatively routine but needed work? For a large chunk of the nearly-invisible-to-silicon-valley workforce doing those tasks, I would be surprised if it wasn't more than 30%.

Another way of spinning this - if "fancy autocomplete" is giving you a 30% productivity boost then either you're not actually in the top 10%, or you're doing working on "top 10% problems".

Which of course, is the overwhelming majority of people! Perhaps about 90% of people :)