Good news: It's possible to install Firefox in the ChromeOS Linux development environment using the regular Debian apt commands now, not just with Flatpak.
Bad news: It's a straightforward yet daunting task straight out of a '90s Linux hacking guide. https://support.mozilla.org/en-US/kb/run-firefox-chromeos
Other news: No matter which way it's installed, Firefox 148 on ChromeOS 144 is so unstable that it crashes unpredictably within a few seconds to a few minutes.
After a dozen years of happily perusing the Web using browsers with decent ad blockers installed, just 15 _minutes_ of trying to find stuff with Google Chrome feels like a dystopian television nightmare. Like, any second now, Google will save me from the sea of animated overlay ads by happily letting some random malvertizer show me a full-screen error message telling me to call Windows Support at 1-800-FLEECE-ME urgently.
Mozilla's instructions for installing #Firefox on ChromeOS don't mention Firefox ESR.
I forgot that this kind of ESR was an option.
`sudo apt-get install firefox-esr` works just as well as `sudo apt-get install firefox` does. Today, it installed Firefox ESR 140.8, and it seems as stable as 148 should've been.
I'm weighing options for a Chromebook browser that's generally decent and doesn't actively sabotage good ad blocking like Google does.
So help me, one of the options I'm considering is Microslop Edge.