What I mean is that in post-USSR collapse, Ukraine ended up with a lot of warheads pointing into different directions.

So did Russia, of course.

It did not help Ukraine with independence (and the warheads were gone very fast), nor did it help Russia retain control of Ukraine.

So I'd say in the hypothetical of Russia falling apart into chunks, Kaliningrad having the nukes won't be a decisive factor in where Kaliningrad ends up.

And I hope that if it doesn't end up as a part of what's left of Russia, whoever gets it won't send the nukes back like Ukraine did.