there's a difference between WMDs that work and rube goldberg war crime machines. why do you think all serious militaries ditched chemical weapons and go balls deep into PGMs? hint: it's not for humanitarian reasons
True, but let's not pretend that we actually found any substantial WMDs. We found 34 tons of mustard gas. At the time, the US had the most VX gas in the world.
If you assume all Russian subs and planes can be sunk / shot down before they release their payloads, there's still over 3000 land based ICBM warheads. There is no terminal phase missile defense system. Majority of the land based warheads will reach terminal phase. The extrapolation that the events in Ukraine mean that nuclear exchange between the two biggest nuclear nations is somehow survivable is both dumb and dangerous.