I don't think people are stupider in the sense of less knowledge (or less g, for sure), but there is a phenomenon where people are expected to know more and kno

I don't think people are stupider in the sense of less knowledge (or less g, for sure), but there is a phenomenon where people are expected to know more and know it quickly. Before the internet, if you were a working scientist and you wanted to know about something that wasn't in your field, it was a fairly involved process to figure it out, not 10 seconds reading Wikipedia. Analogously, if you weren't a scientist at all, you'd have to ask a scientist, you couldn't spend 10 seconds reading and potentially misreading Wikipedia, you'd just say "I don't know." I think this has consequences in other fields besides science too. The general public now has the ability to have well-formed opinions about government policy and its effects, for instance. That may in practice be making people more confident in their ill-formed opinions, where they would have previously deferred to experts. (Of course, it also is a great potential benefit if we use it right, because those experts will generally have their own biases and agendas.)