Is it possible, and perhaps even likely, that most of the world's nuclear weapons don't even work?

But they're constantly discussed, because it keeps the ordinary shmuck in a state of perpetual fear, and will therefore be more malleable to propaganda.
I ask this question because I've come across quite a few documentaries, if one can call videos on YouTube "documentaries", that discuss the very real likelihood, based upon simple accounting and arithmetic, that most of Russia's nukes are duds.
For example, this one.

[media=https://youtu.be/iId3y9JtTbs]

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SomeMichGuy · M

I think that the pressure & inability to keep up in the arms race (which helped sink the Soviet Union more quickly) HAD to have led to corners being cut, etc.

If old panels were not checked, maintained, upgraded...they probably quietly failed.

But the missiles themselves could also suffer the same fate; the life of components, connections, etc., depends on a lot of things, including the quality of the original components (likely poor) and the ambient conditions (likely all over the place since 1989, for silo-placed missiles).

Then is the fuel available / good? Will ignition work? Are the pathways along/around the exhaust still open?