As owners of the 365 fleet, why would DfT want to shoot themselves in the foot by taking 365s off lease. They should be looking to get them all back in use!
They didn't get them for free, and they're also paying out for storage on the units that are currently off lease.
They could go for scrap so they're no longer costing anybody anything whatsoever, if there's no demand need for them that can't be met by other more modern fleets.