Discussing without drama isn’t being stoic or not present. It is a rule that eventually becomes easier to understand as you practice communicating your own yearnings or needs, without expecting the other person to change. When we just talk from a matter of fact tone, it creates a better conversation.
This is about specific emotionally charged topics, not every day conversations.
When you have a huge issue in the relationship, allowing the emotions to cool, and communicating about the big issues calmly and with great care moves you to resolution and resolve much faster.