As a bystander I just want to applaud you for that awesome display of control and de-escalation. It's too easy to get carried away online and forget that we're all people, way to be better!

For the record I'm also a Vivaldi user mainly because Chromium browsers make work easier for me but I refuse to use Chrome. However, as soon as Firefox fully supports sidebar tabs without an extension or CSS modifications I'm going to try to completely jump aboard.