Someone said this in the congratulations thread, but I think the salient point is that BrandonM's comment was upvoted highly, not that it was particularly offensive.

Hacker News has a strong negativity bias. Most of the time the top voted comment is a snarky takedown of the post. Especially in the earliest days of startups, its far better to be a cheerleader on the outside than a cynic (unless the startup is unethical). It's just so hard to build successful companies, and so easy to dismiss things at that early stage.

And yes, I know this very comment is deeply ironic in a way

edit: thanks for down-voting me OP!