[throwaway38375]

Something useful, submitted with good intentions, will be received well, regardless of when you submit it.

[gmac]

Not true, sadly. In my experience there is a big element of luck, and the headline matters a lot.

For example, my most popular ever submission (1341 upvotes) didn't get a single upvote when I submitted 4 months earlier under a slightly different headline.

[KomoD]

Of course title matters, and your title wasn't "slightly different", it was very different.

"See this page fetch itself, byte by byte, over TLS" - repost

"Annotated Live TLS 1.3 Session" - original

The reposted title was way more interesting

[sabrina_ramonov]

This is why, in marketing, you'll hear mantras like "spend 80% of your time writing the hook (title)"