I know that I am better at navigating with google maps than average people, because I navigated for years without it (partly on purpose). I know when not to trust it. I know when to ignore recommendations on recalculated routes.

Same with LLMs. I am better with it, because I know how to solve things without the help of it. I understand the problem space and the limitations. Also I understand how hype works and why they think they need it (investors money).

In other words, no, just using google maps or ChatGPT does not make me dumb. Only using it and blindly trusting it would.