Your use of LLMs is distinctly different than the use being described here (in a good way).

You might ask "What do I need to pay attention to when designing this type of electronic circuit", the people at risk of cognitive decline instead ask "design this electronic circuit for me".

I firmly believe that the the latter group will suffer observable cognitive decline over the span of a few years unless they continue to exercise their brain in the same ways they used to, and I think the majority won't bother to do that - why spend much effort when little effort do trick?