A question to consider is, how to we move from pandemic to endemic? COVID-19 isn't going away and will join the other endemic viruses like chicken pox, the other widely out there coronaviruses, etc.
Endemicity proponents argue it will be like the common cold. But that’s unproven. Endemic just means “present”. Malaria is endemic, dengue is endemic. HIV is endemic in certain areas and groups. The word itself tells you nothing.
Absent restrictions and even with vaccinations you’d expect most people to get a covid infection 1x per year or two. Same way we generally do with other coronaviruses. The hope is that SARS-Cov-2 is just like any other coronavirus and with immunity won’t cause long run issues upon repeat reinfection.
We’ll find out the answer by 2024 or so.