better then using gnu-ice cat

An essential for the upmost secure and private browsing experience. Just make sure to periodically go in the settings, use the "back up to file" function and store that file in a cloud, such as Google Drive or preferably a privacy-respecting provider (Proton Drive or Sync).

If it's recommended by PrivacyTools.io, it's good on my book. If you haven't checked them out, they have other solid privacy recommendations.

very good

very good

Please make it that the user can still use the app on FF 55.00 and later version.

This is a stellar achievement in Web browser history. :-) Simply put. This should have been built into the design standards from the beginning.