If someone already deleted Firefox Sync and wants to get rid of Sync item in main menu, you can disable it by going to "about:config" and setting "identity.fxaccounts.enabled" to false.
AFAIU Firefox Sync is end to end encrypted, right? I interpreted the language here to mean that the data might be sent to Firefox outside of Firefox Sync. Have there been any changes to Firefox Sync that we know about?
