Then you could, for example, browse the ed column of birthday wishes & happy usage stories of Go, say on the left hand side, and then also, scroll through the op-ed right column of dissenters and critiques.
There's just something very disheartening about having a bunch of "anti X" dominating what you were hoping would be a discussion of "X"; downvoting is certainly not the right solution -- it's fine to be anti-X, it just needs a little bit of its own space.
My idea is different, though -- the essence is
(1) you'd self-tag -- imagine clicking 'in support' or 'in opposition' to comment.
And then (2), those two different sets of comments would go into different parts of the page.
Maybe a two-column view? Maybe separate pages?
Basically, conversations in a single-section format like HN are constantly getting overrun by criticism. Criticism is interesting and has its place, but it tends to be noiser, and it's disheartening when it's getting in the way of something you want to be excited about.