Ignoring the NBA, the reason people are being booted or moved to DVC/FW for the near future is that there isn't enough demand for the resorts. Disney will open up more resorts as the demand picks up, but for the time being its highly unlikely they would have opened the YC/GF/GDT for your dates anyways. Also, based on reports people aren't being asked to pay any difference if they keep their dates, only if they book new dates. While that might be cold comfort if you had a discount at a Deluxe resort and they are trying to convince you that a rack rate DVC room at the same price is the same value, you won't have to pay more if you still want to go.