It should be expected that adults can think critically and skeptically of what they read on the internet.
And yet the one thing social media has really shown us is that a huge portion of the population had absolutely no ability to think critically. People are content in their bubbles of confirmation bias, consuming nuggets of "information" that are fed to them by the social media algorithms. Doing "their own research" aboyt critical subjects when they have absolutely no clue how research works and generally have made up their minds anyway an "go with their guts" because it feels good and makes them feel smart. Social media has become a poison. I'm not sure if it is actually making people dumber, or is just highlighting how shocklingly stupid they already were...
We gave you an atomic bomb, what do you want, mermaids? -- I. I. Rabi to the Atomic Energy Commission