That's always been the case. Surely you didn't used to trust random information? Ask any schoolteacher how to decide what to trust on the internet at any point

That's always been the case. Surely you didn't used to trust random information? Ask any schoolteacher how to decide what to trust on the internet at any point in time. They're not going to say "If it's at the top of Google results" or "If it's a well-designed website", or "If it seems legit".