If I'm sending encrypted mail to gmail, only that one mail is compromised once decrypted on gmail's servers.
What? How? Most private email providers only support encryption like Proton to Proton or Tuta to Tuta. Emails sended to anything else stay unencrypted. And there's no way you're going to use this stupid password protection everytime, because if you do, then why would you even use email?
Do you only send mail to gmail users or something?
Almost everyone uses Gmail, Outlook, Yahoo or whatever. Unfortunately, not everyone are privacy concious like you and me.
smtp is no better or worse than xmpp, irc or whatever else if you have end to end encryption.
No, it's not. Emails should not be used by political activists to communicate. Even the best email providers like Proton or Tuta can't give you 100% protection and this activist arrest is the perfect example.
Email is the obsolete protocol, that should only be used to register on random websites and get authorization codes. For everything else you should use secure messaging apps.
Moving to Brave Search from Google is just very invasive spyware to less invasive spyware.