For ~60 years the "physics" that drive people into large urban centers has been changing, with the changes getting much faster at the last ~20 years.

I really don't think there's enough evidence to say the change is on the direction of people abandoning cities (but the largest ones already slowed down their growth to a minimum). But it's unreasonable to expect the COVID changes to be undone. Things change slowly because people resist changes; but once they change, people will resist reverting them.