Skepticism requires critical thinking and engagement. You can't be a proper skeptic about something without taking the time to understand the domain you're being skeptical of, approach it in good faith from first principles as much as possible, and accept criticism in kind.

Most people just won't bother, because cynicism and snark provide a better endorphin hit, and the internet has trained people to associate that feeling with likelihood of correctness (what Stephen Colbert called "truthiness" back in the day.)