Can't wait for for the 2120s when we do all this again but the nukes have pure fusion igniters and probably some kind of pseudo intelligent AI guidance systems so their proliferation can't be prevented and they can evade anti ballistic missile systems.
nobody changed anything, so why should have anything changed?
development does not appear by pure wish or magic, nor by letting time passing by, people have to do it, or it just doesn't get done.