Earlier quoted context omitted.
https://phys.org/news/2023-03-online-iq-scores-century.html https://doi.org/10.1016/j.intell.2023.101734
that's a study published in 2023, analyzing data that ended in 2018.
"Do you guys think we're going to see a de-evolution of human beings due to technology?"
Not LLMs specifically.
Insofar as I believe there is value in IQ tests, this is a technology-driven effect, most likely due to the impact of distraction and search result immediacy on sustained thinking.
IQs used to just rise, year on year, because living in the world required more and more of the thinking that IQ tests measure. And now they don't.