Re: Software Junk
I submit that there are several things that contradict you.
[1]
As I linked in the article, the default support lifetime is 6½ years:
https://www.theregister.com/2019/08/22/buying_a_chromebook_dont_forget_to_check_when_it_expires/
For a rock-bottom price bracket, cheap consumer laptop, 6 years is a pretty long time. I suspect a great many of them will be clapped out or broken by then.
[2]
They won't suddenly stop work working. They just stop getting OS updates. They may continue to get browser updates for a while.
[3]
Secondly, as the ChromeOS Flex article I linked to also points out, it *is* possible to "root" most ChromeBooks and install your own OS. If you do that and install ChromeOS Flex, you get OS updates again.