I mean, yes but LLMs have been making me more cognitively active. I've learned how to do more stuff that I would have without them and it's a decent multiplier not some rounding error.

Obviously you can have a plumber that knows his stuff and the one that doesn't. The good one can check some details and will recognize bs. If you already have the bad one it's probably if better if he uses LLM rather than when doesnt.