I like the odds of a smooth migration on HN over two competing platforms cooperating on an exclusivity agreement.
>> Reading your comment, it seems completely non-sequitur. Were you expecting this particular comment to be read 6 months from now, and felt it very important for the author to take this into account?
Link rot is a growing problem, and it's not going away. Extra context, reference numbers, etc can help rediscover the content behind broken links. In this case, it's more of a certainty than usual that it's going to break, and there's zero chance it'll show up (or stay) on something like Internet Archive.
But you're right. Without that context, my comment is easy to misread, and there's no way to know what votes in either direction mean.
I think your comment just didn't add anything to the conversation, no one was really disagreeing with you. But that's one of the major disadvantages of downvotes: It's natural to make assumptions about the motive behind it.
Also, your link might stop working if HN switches to UUIDs instead of unsigned integers.