Here's a situation to consider. Player A is playing against Player B in a tournament, and Player A is also watching Player B's stream or broadcast. Does Player B have the right to publicly stream or broadcast the game? What's the current situation on the forum?

I believe that Player B does not have the right to stream!
I'll explain the reason with a specific example: Mr. Gomunguls, being a player with higher skill, openly discusses moves in the chat with his team members (giving clearly useful advice and hints) while they are playing. Of course, someone might be against this situation. Here's the explanation.
I'm not against this, and as I understand it, the team isn't either. In fact, I've joined your broadcasts myself, openly, and as far as I can tell, you were okay with it. If you're interested, I'll share my broadcasts of tournament matches. I'll answer the question that might arise: I'm not posting them in the thread because I don't think my skill level is high enough; there's nothing to learn there.
You haven't posted the latest games in the thread, but you seem to have been broadcasting them "for your own." I'm not against it, but if, for example, it's against Shuk, I'll ask you not to broadcast or discuss it. Although, perhaps I don't know the rules well, or it's not described there, and it's allowed in team games....
But if I'm in a 1v1 tournament, I'll be against Vigo giving a broadcast to Vitalik (names are fictional), and I'll insist that there be no broadcast, no public one, none at all....