Or HN traffic is down. Or people don't hire into the holiday season, or tech is down. There are countless things that could drive that number. We can't tell from a few monthly counts.
No. It's the answer that fulfills your own confirmation bias. "Obvious" is never a word you should use when you can quantify the truth.
No, it's the obvious answer, so it's less interesting to speculate about than alternative, less obvious answers.
Perhaps _too_ obvious.
Most of the titans are in a hiring freeze or have choked non essential hiring.
I don't think those titans posted for jobs on here anyway.