Considering the fediverse microblogging scene includes Threads, which claims to have hundreds of millions of active users, I'd say its death is greatly exaggerated.
Yes, I know a lot of Mastodon servers refuse to federate with Threads, and yes I know their active user figures are likely very different from what they claim. But at the end of the day, it's an ActivityPub microblogging platform with a considerable userbase and a very rich corporate backer.
A regular reminder that ChromeOS is Linux. It's Linux you can buy from a bricks and mortar store, preconfigured for the average low-knowledge user, and with minimal to no maintenance overhead.
We enthusiasts obviously mostly hate it, but we're not its target audience. Its target audience (non-techies who mostly just like to use their phones) get on great with it.
People need to accept that any Linux distro made for mass market is going to look more or less like ChromeOS. There's nothing wrong with that, as long as traditional distros also continue to exist. But people need to get out of their heads that the "year of Linux on the desktop" looks like Ubuntu or Fedora or Mint. What it looks like is ChromeOS.