Yes, but those people will never stop being vulnerable. Covid is never going away, period. Anyone saying otherwise has been living in a fantasy for nearly 2 years at this point. So completely distorting society to ensure zero Covid exposure has not only proven itself to be relatively ineffective, but it would be required to be done forever.
The situation will be no different in a year or 5 years than it is from now, so continuing to argue for societal shutdown is completely untenable.