The UK isn’t quite that far, but it’s absolutely the dominant text messaging and calling app in the UK. Nobody uses the built in Android or Apple tools anymore, and I’m as likely to receive a WhatsApp voice call as an actual phone call these days.
I have Signal on my phone, but I’ve literally never had a cause to use it; I’ve simply got no contacts on there.
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.