I really just don't believe you can determine the truth content of an comment by how it is written, but maybe that's years of reading good sounding but factually inaccurate comments on HN and Reddit. There's an art to writing psuedo intellectual bullshit, and most people aren't capable of (or aren't as good as they believe they are) at judging complex issues outside of their domain.

Would just as soon not give armchair phd a platform. There's some research (don't feel like pulling it up - bullshit?) that talks about how the decline of valuing expertise has had some negative social consequences, but that's probably obvious.