yokoffing

The section "Securefox" should probably be renamed "Privatefox", but labels are misleading. It's best to read the project files to understand the balance taken with security, privacy, and functionality. Let's make it simple:

Want a mix of speed and privacy, while retaining functionality? Use Betterfox user.js.

Want more privacy and security at the expense of site functionality? Use Arkenfox user.js.

Want Tor prefs but without using its nodes/relays? Use Mullvad Browser.

Want anonymity? Use Tor Browser.

The first two prefs are commented out (using //) and are not in the user.js itself, and the latter two are in the user.js but are 1) easy to re-enable and 2) the repo indicates how to enable them if you need them. Please read the Github page.

There are substantial differences in Betterfox compared to Arkenfox. Betterfox causes less breakage and is appropriate for everyday use cases.

Do you mean DoH? Not everyone uses DoH or even the same DoH provider, so no, it cannot make this change universally for everyone.

You can make DoH strict by adding user_pref("network.trr.mode", 3); to your user.js. Or you can also go to about:config in the address bar, searching for network.trr.mode, and changing the value to 3.

Librewolf is essentially Arkenfox but as a browser instead of a user.js. You may gain more privacy but at the expense of potential site breakage.

Betterfox is for everyday use cases and should rarely cause site breakage. It also has prefs to prevent annoyances and improve browsing speed.

There are substantial differences in Betterfox compared to Mullvad, Arkenfox, and Librewolf. The latter three use almost the same configs, each with their own minor differences, while Betterfox causes less breakage and is appropriate for everyday use cases — as long as you learn how to apply a user.js.

Betterfox configs provide with a clean and simple interface that lets users focus on their desktop browsing experience. The overrides are there for users who want to retain features like Sync.

Edit: The project aims to have the minimum amount of needed changes, but everyone will have a different opinion on what is needed. No one can please everyone, so you have to draw the line somewhere.

Perhaps Betterfox can post a poll and get feedback on how important it is for users.