Good Lord, what next? “I switched from Mac to Windows and you can too”?
Might make sense if the Chromebook can be degoogled and set up with a clean Linux distro. Barring that, a regular laptop with Linux may be an option.
Framework has always been appealing to me as a Mac competitor
Yeah, it's definitely possible. https://github.com/altreact/archbk shows how you might do this end to end on an older machine and this thread https://archlinuxarm.org/forum/viewtopic.php?f=65&t=17308 shows some progress in that direction on this particular device.
The real question is if you have enough patience to power through making it work.
I did switch from MacOS to MS Windows in 2023, after being on MacOS from 2015 (and various Linux distros between about 2000 and 2015; before that, Win98 and earlier versions, so help me God).
I did not think anyone would be interested in reading about any of this, and reading the article reinforces my hypothesis.