When a blog post starts with saying "twitter is dead" it doesn't really make it worth reading further. "Twitter is dead" was said pretty much as numerously as "2 more weeks" but it's off better than ever, with Community Notes having proved themselves and X now having proved its capability to serve its main mission by working as the town square on issues related to OpenAI, Gaza, etc, etc. Eventually, with subscription…
Well twitter doesn't exist anymore so yes it is dead. Also it is funny that for a lot of people including me, slashdot, digg, twitter and reddit are already a thing of the past while we are still visiting regular old forums.
X will have some trouble shedding some of Twitter's old behaviors and such though, and it can't really scale down to a boutique-level platform like HN. But these are fundamentally different types of platforms due to the kind of people they attract.