In my defense:
1) There's definitely an element of "if the user can’t find it, the feature doesn't exist" with downvoting here.
2) In practical terms, downvotes are so extraordinarily rare on HN that they almost don’t exist.
Anyway, I'm encouraged that downvotes exist on HN, but the threshold could be considered so absurdly high that they're nerfed into oblivion.
And they don't exist for article submissions, which is problematic for all the same reasons I listed in the blog entry.