Whenever an important discussion is going on, there will always be one person who will personally pick the discussion. That person will focus on clutter while everyone else is trying to focus on the main agenda.
You have to see that your talks and the plans stay on track. Learn how to keep the talks on track. It’s important.
This is equally true in professional and personal lives: that one colleague, that one friend, that one cousin. There always is the one who loves to see things the way they aren’t.