I got to share my opinion here. We all spent our hard earned money on a new bike, we want it right, we just want to ride.
Yamaha realized they still have some problems with the cct and they are trying to produce new updated ones fast as they can. With that said I can only imagine they don't have enough available at the moment to replace every one, on every bike sold. Just as I can only assume the dealers are not ready to be overwhelmed with everybody wanting there cct replaced now. If some bikes are not making noise why change it? Hence why it's a SB not a recall.
If yours is making noise and needs to be replaced do you want to have to wait because someone elses got theres replaced and it wasn't actually making noise or wasn't bad to begin with? I would hope that dealers prioritize parts and labor for bikes as needed.