You say the question is whether it contribute more. Obviously it does not, but that's not the question. The question is what produces the best community on the site. Vapid positivity can be easily ignored (and as you point out is often down voted). But even when it's not, no big deal. Vapid put-downs are vastly more dangerous, because they're mean as well as stupid and thus create a negative and toxic environment for others.
You say the question is whether it contribute more. Obviously it does not, but that's not the question. The question is what produces the best community on the site.
That's a good question, but it's not the question I posed.
I agree that vapid positivity is easy to ignore.
Sniping is arguably worse than "+1" back-patting for the community overall, but I was asking whether vapid positivity was adding any benefit to anyone, or is it simply a lesser or different kind of bad.
As someone else pointed out, individually these sorts of three-word comments do not contribute to the discussion. In the aggregate, though, both the good and bad may have real value, at least to whomever is behind the product under discussion.
It's a weird situation because no single comment of that form provides discussion space for a response (other than perhaps meta-comments about superficial commenting) but as a whole they may drive some useful observations.
