And of course you didn't write about a scandal in progress or something like that.
If you write just for the interaction with HN I can imagine that it is hard if your stuff goes by unnoticed, but of course there is no automatic relationship between what you did and how it was received in the past coupled with everything you write in the future.
Maybe simply not enough people thought it was homepage worthy and it is a signal to do better? That's how I interpret it when my stuff slides by without even a single upvote.
(I note that even devmonk who commented did not upvote your submission).
Don't take it so personal, as HN grows this is bound to happen more and more often. I've had it happen to me with an article that was requested by people here, that felt pretty weird too, but there really are no guarantees.
Spray and pray :)