Unlike fossil fuel power plants, NPPs don't depend on a steady supply of a high volume of costly consumables just to keep running. Reactor fuel loads last months to years, naturally buffering any price shocks or supply chain issues. And you can maintain an "energy security" stockpile of nuclear fuel that would add you even more years of runaway.

To have your nuclear power disrupted, you have to face an adversary that's both capable and willing to hit targets on your soil, and on top of that, is willing to target NPP infrastructure specifically.

A random rogue state lobbing mid-range drones over a strait wouldn't cut it. Neither would a war halfway around the world.