Just for completeness sake, the EU is currently in the process of introducing a similar system called ETIAS.

Consider this, if only 10% of the warheads work that still leaves over 400 working bombs. Even in the unlikely situation where Russia didn’t know which ones where in working condition they could just resort to throwing 10 bombs at a target instead.

We also haven’t even defined what not-working means. You could for example classify a hydrogen bomb that doesn’t trigger it’s fusion stage as non-working. The primary stage of a thermonuclear bomb can still have a yield of a few hundred kilotons of TNT. The bombs dropped on Hiroshima and Nagasaki where well below that.

For these reasons I consider the “Russian nukes don’t work” a nice fantasy at best. The threat is real and only kept in check by western nuclear counterstrike capabilities.

This is an incredibly dangerous assumption. According to the Federation of American Scientists Russia has a stockpile of 4489 warheads of which some 1674 strategic warheads are deployed on ballistic missiles.[1] A large part of these warheads might be defective but realistically you only need a handful of working ones. Russia also has the necessary material and infrastructure to keep their warheads in working order.[2] So while their capabilities compared to the USSR are greatly diminished there is no reason to assume that Russias nukes are all in non-working condition.

[1] https://fas.org/publication/nuclear-notebook-russian-nuclear-weapons-2023/
[2] https://www.armscontrol.org/act/2002-10/features/breakdown-breakout-us-and-russian-warhead-production-capabilities

That isn’t really an issue as PebbleOS is open source.