Yaarel
🇮🇱 🇺🇦 He-Mage
Of course, there's the other question of what do you mean by speaking. If it's a couple of words, fair enough, but if you're reciting the entire text of the Iliad that's something else.
I think the ruling about talking comes from the idea of allowing the DM to cut short endless planning in the middle of combat. Nothing drags the game out worse than watching a group get analysis paralysis every single round as everyone tries to weigh in on the absolute optimal tactical plan for every single action.
So, this cuts through that and says, "Look, if you want to shout a warning, fair enough, that's a non-action, but, stopping the action to have an extensive conversation about the merits of magic missile vs burning hands for the next fifteen minutes is off the bloody table. OK?!?!?"![]()
Thats why it seems ok to group speaking in with other kinds of Flourish. If its just one word or short phrase, no problem, it is free. But if it seems more like a conversation, then it uses up the one Flourish, and some DMs might even require an Action or Reaction after a certain point.