Fine, I lived without Internet before ... installed Microsoft Flight Simulator from floppy disks. Will be a little more floppies this time, I guess. No big deal.
And no, you can't just go back to playing flight simulator off of floppies. Your bank, your airplane and concert tickets, heck even your child's pediatrician will require it. Not that doctors are hungrily reading up new web specifications, but they'll be using a medical services platform that relies on some cloudflare defaults that all the security guys like because it cuts down on bots and DDoS.
You'll be left using walled garden operating systems that spy and advertise as incessantly as cable TV.
Maybe a big stink will cause Google to backtrack a little, or make promises they won't and can't ultimately keep. The only real solution is to use the government to prevent users from losing control.
They could have stopped Linux support from Chrome at any time, or not created it to begin with. Plus there are lots of people at Google who are using Linux, not to mention Chromebooks which are built on it.
There is no reason to think that Google will kill Linux support with this or any feature.
Specifically, ChromeOS running the google-signed, untampered, OS image