There must be a good reason for doing so.
Maybe they are ‘retired’ in name only................
Might be a good idea to have a supply of “second tier” stealth aircraft available for use in a secondary/lower sophistication theater.
Thinking your first tier would be needed for a peer/near-peer conflict (N Korea/PRC) and this tier could be used for a simultaneous conflict (Yemen/Iran).
Smart move, imo.
Possibly modified to be flown by CIA contractors as Unmanned Aerial Vehicles into high-risk areas.
A pay out for a contractor that was put into a contract 20 years ago. If it’s OBE it’s irrelevant it’s in the contract.