I usually use a feed reader to gather news, but some news sites use newsletters instead of distributing feeds. As a user, is there any advantage to receive news using newsletters over feeds?
If you previously installed a customized version of Firefox with Yandex or Mail.ru, offered through partner distribution channels, this release removes those customizations, including add-ons and default bookmarks. Where applicable, your browser will revert back to default settings, as offered by Mozilla. All other releases of Firefox remain unaffected by the change.
This discussion is informative. ・More features ・Faster updates
https://github.com/iv-org/invidious/issues/2896