This could get a bit messy.
Derby game v Chorley will go ahead with Derby fielding youth team due to covid outbreak.
Villa in a similar position v Liverpool, but there is a suggestion that game will be postponed (because they are playing Liverpool not Chorley).
Shrewsbury have cases so their game with Southampton has been postponed. Is this because they don't have enough players to field a team including youth players - unlikely I would say?
Then you will have a raft of postponed games because of the weather.
So if some games are off anyway due to the weather you are going to get a backlog of matches that have to be squeezed in.
The traditional slot for replays/rearranged games a week and a half after the original date has already been filled up by several premier league matches being scheduled into those dates. Those have already been snapped up for tv viewing so cant see them being cancelled.
There's going to be some unhappy people whatever is decided.