I think reasonable minds can differ on this, but I'd much rather kids returned even if only for 2-3 weeks. I don't think there is much "ramping back up" as another poster said - this is what the schools/teachers do. Even at the beginning of the school year there are only 2-3 days to get into the full swing of things and that is after a summer break where there hasn't been distance learning going on.
Distance learning has been a fine substitute when there is no alternative, but I don't think it has been an adequate replacement for in-class learning. I agree with
@xdan0920 that any classroom time is better than no classroom time.