Maybe he's referring to media hype. It lasted about a week, and now it's gone. I know you can't buy it or use it yet, but it feels like the announcement never happened.
Similar for Bluesky. Everybody queuing to get in, but after weeks on the waiting list and still no sign of life, the moment is gone.
(Off-topic warning) the speed of your reply implies to me that you have some way of being directly notified of HN replies. What software do you use for that and do you like it?
For what it's worth, I will sometimes just check the "threads" link at the top of the page and happen to see a response minutes ago (or less) to my comments. It's possible that happened here.
It’s only my opinion, don’t get worked up about it.