That could be the case and likely is in areas where they are strongest, just like the articles example of how its not as useful for systems programming because he is an expert.

If you ask it about things you don't know it was likely trained on high quality data for and get bad answers, you likely need to improve your writing/prompting.

Except it's most dangerous when used in areas that you're weakest because it will confidently spit out subtly wrong answers to everything. It is not a fact engine.

That only matters if you use it for things where failure actually causes damage.