Your example contains several unstated assumptions:
People know their sexual orientation
The decision to take the vaccine is voluntary
People base that decision on their sexual orientation
Hence the decision to take the vaccine with an unknown sexual orientation never occours.
Your example contains several unstated assumptions:
People know their sexual orientation
The decision to take the vaccine is voluntary
People base that decision on their sexual orientation
Hence the decision to take the vaccine with an unknown sexual orientation never occours.