It's unethical to give people a vaccines that can cause a blood clot without informing them first of the risk.
It doesn't matter that globally it could cause more deaths. It's not the job of the FDA or CDC to act as your parent and decide for you what risk is and isn't acceptable.
Informed consent is a cornerstone of medical policy.
What will happen is they will modify the consent form to let people know about the risk, and let them decide for themselves.