I dunno, as an engineer who likes to make side projects, I can say with high certainty that LLMs have helped me compensate for things I'm worse at when coding a product.

I'm good at the engineering side of things, I'm good at UI, I'm good at UX, I'm good at css, I'm just not good at design.

So I tell the LLM to do it for me. It works incredibly well.

I don't know if it's a net increase in productivity for me, but I am absolutely certain that it is a net increase in my ability to ship a more complete product.