Well, I don't know.
I mean, at one level, obviously it is true. Which is why I said what I originally did, agreeing with you. Absolutely, people oftentimes don't speak up aloud, for a number of reasons, like not wanting to feed a troll, like not caring enough to, like not having the time, like not having even seen some particular (portion of some particular) discussion, etc.
On the other hand, there's this, right? In another thread, we were at yet another installment of that old chestnut, how you can tell if there's God, yadda yadda yadda. And well, what I said there, does apply to all things. That we haven't yet seen evidence of God, while that might simply be because there's a God that hasn't left evidence, or that has left evidence that we haven't yet seen, but still,
functionally, it does tantamount to us concluding, quite reasonably, that there's no God. And again, us
not accepting that claim, the claim that God exists, is
functionally equivalent to us
rejecting that claim, right?
So, likewise here? Take this piece of thinking through on this post of mine --- which, heh, is obvious enough, but still --- and say no-one at all responds to this. While at one level that does not
necessarily speak to whether others have read this and have not agreed with it, as discussed in the paragraph preceding, sure: but if I don't find evidence of people having agreed with this, then it does seem reasonable for me
not to leap to the conclusion that people have agreed and are silent about it. Which is functionally equivalent to my not believing that others have agreed with me, absent evidence of their having done so.
So yeah, that's why I came back to post that ...correction? ...or, at any rate, afterthought? ...to what I'd myself said earlier.
eta: Come to think of it, what this amounts to is that, for precisely this reason, if we see a contentious discussion ---- contentious certainly in terms of feathers being ruffled, but contentious also in terms of people talking very amicably and agreeably but disagreeing squarely about something --- when we see such, and when we are clear in our own mind about which side is right, and we have good reasons for thinking that, then, rather than not speaking out at all, we might just make known our opinion, even if briefly. That way the "correct" opinion gets more weight, and the discussion itself probably is benefited, even if we aren't necessarily saying anything new. (Cue people "liking" this post of mine in vast numbers!)