Do the Turbo::Broadcastable#broadcast_* methods waste effort when no one is subscribed?

I am evaluating using Turbo Rails and after diving through the code, this is still a little unclear to me. My question is simply this: if a broadcast goes out that no one is subscribed to a particular stream and e.g. broacast_replace is called, does Rails still render the template?

This appears to be the case to me, and seems like quite the waste of effort, so feedback appreciated