Let's also note that Google now offers ChromeOS Flex[1], which is a version of ChromsOS comparable to Debian "old stable".

I have ChromeOS Flex running on two older (but excellent) Chromebooks used by family. The hardware is good; the chipset was obsoleted by Intel. ChromeOS Flex is keeping these devices useful without my needing to install Debian. (Less work for me.)

[1] _ https://support.google.com/chromeosflex/answer/11542901?hl=e...

that is correct, but this is a new policy, announced only in mid-September 2023[1]

[1] https://blog.google/outreach-initiatives/education/automatic...

And the previous policy was 7 years for most models. The original poster was still blatantly lying.

7 years from initial launch, not from end of sale, so it was quite possible to buy a Chromebook and then have it promptly lose support