I can't speak for what the OP intended, but I would consider that having aging nuclear weapons in a country with a possibly unhinged dictator who has an expansionist agenda is the result of not taking nuclear armageddon seriously.
Who the hell wants to invade Russia? Who the heck is threatened by them? No one's coming for them, they don't need the nukes.
If we took nuclear armageddon seriously as an existential threat to humanity, then this issue would have been dealt with much earlier - most likely when the wall came down.
A lot of diplomatic efforts were made at the time. Ukraine was convinced to hand over their nukes, in exchange for security guarantees (that went well...) And in reality, the amount of US/Russian nuclear weapons was reduced during that period (mostly tactical)
But imagine us 20 years into the future. 6% inflation for two decades has made the US deficit unwieldable. The dollar is no longer the international reserve money. The US has tripled its debt since 2023, and has defaulted.
China is very anxious and demand the US abandon nuclear weapons in return for financial aid and debt-forgiving. What do you think is going to happen?
You're never going to get someone suffering from acute loss-of-empire to give up all of their nukes.