Oh, so it has nothing to do with Trisquel, but with the specific programs
devs? Then logically, these programs shouldn't be relied on as the main
browsers. But maybe the alternatives aren't better.
Then besides Tor, what would be another alternative, in your opinion?
Would a Debian package of Firefox be fine? If so, would I have to check for
updates, and download and install the package of the newer version every
time, or is there a way to upgrade to the next ESR automatically?
Of course, Firejail and Apparmor come to mind (if that's enough).
But it sucks for the average user who barely knows about updating the OS,
specially if it's the very thing that fails him/her.
Oh well, maybe Debian is the simpler solution. I'm not a fan of non-free
recommendations though. And Firefox has stuff like Pocket, if I'm not
mistaken, which still has a free license. But that's also the more radical
and last solution on the list.
Midori is up-to-date, but not as secure/privacy-friendly, it seems. Also, no
access to some essential plugins.