They have other downsides, IIRC (no https or something).
I think Firefox (and it's children) is a must because it's a great web
development tool, it's more easily hackable (I have a script copying the URL
displayed to use with youtube-dl), and it's still safer than lightweight
browser (I think, not sure).
The problem is, as we've seen here, it's complex.
Tons of things to take care of, to tweak, and tons of available addons that
might do the same job twice or more (which also slows it down).
That's why I like SuperTramp's minimalist approach. The smaller the attack
surface, the better. I do want to test it facing the list of threats (though
some of these threats are harmless IMO, like geolocation since it needs to be
activated).
If 3 addons cover what 10 addons do, all the better.
Also, to me it's about what I do with each tool.
I think a normal browser + TorBB is enough.
I should use TorBB much more, and leave the normal one to specific use cases
(sometimes necessarily including JS, so with the browser Firejailed for good
measure, even if overkill).
That normal browser needs to be safe enough, and leaving as little foot steps
as possible, but still be easy to configure and lightweight enough (not 10
addons).
Fetching some data to Conky in an anonymous way would be cool as well (news,
weather... ).
