is that when prompted with something they don’t know, they will spit out some randome bullshit rather than say they don’t know

This is just the majority of people, not specific to any generation. Our minds are predisposed to use inductive reasoning to explain the world around us. We see something new and our brain immediately begins to make inferences based on prior information we believe we know (I say it this way cause our memories are incredibly faulty) that we think is relevant or comparable.

It’s essentially the Dunning Kruger effect: we think we know more than we do and, because of this, believe we can simply assume correctly about other things we know nothing about.

It’s an incredibly bad habit that is supposed to be trained out of us through our education systems but we all know how incredibly faulty those systems are.