> it's still asshole-ish to assume that everyone else just be completely dismissed...
I think you're being overly harsh, nobody mentioned "dismiss[ing]" "everyone else"; yet I agree with the parent that conversations with such broad participation seem to be less interesting/'more dumb'/however-you-prefer-to-phrase-it.
You even hinted at some of the reasons this might be the case; i.e. that different people have knowledge of different things (i.e. 'there may be things these "morons" know way more about than you do'). The more people are included in a conversation, the less common ground there is to work from. People certainly can make accurate, fact-checked, carefully-worded contributions; yet they may be less likely to spread for a few reasons, e.g.
- Being more difficult to understand for members who aren't as well-versed in the subject, compared to slogans, soundbites and memes.
- Being more difficult to produce, compared to off-the-cuff remarks and guestimates.
- Being realistic can be less attention-catching and thought-provoking for those who don't already know a subject, compared to baseless hyperbole
- Those who don't already know about a subject, and try to contribute with e.g. anecdotes or quotes from others, may be unable to tell accurate information from inaccurate.
It's unlikely that such contibutions will spread very far, so the content which does reach any particular individual will tend to be less useful bu good at spreading (e.g. "viral" videos of cats).
These sorts of factors can lower the usefulness of a discussion. At a certain point, the quality or depth becomes low enough that those with a vested interest will often split off to a more focused/dedicated area for discussion. This leaves the original "mass market" conversation even more impoverished.
As an analogy, let's say you're considering which of two datastructures to use in some project; imagine trying to debate their relative merits and solicit opinions on their complexity tradeoffs by posting to a generic "Computer Users" group on Facebook, amid the background noise of questions about what's the best MP3 player, how to change the colour of the Windows taskbar, and where to get a keygen for Photoshop.