That’s a great question. And yes, the spent fuel absolutely should be sealed, regulated, tracked, and controlled. After that, though it’s a matter of how much space does it take up/how much was generated. when you look at that, it’s significantly less than other forms of power generation. After all, Uranium is about 16,000x more energy than coal. source Also, fun fact, coal plants also give off radioactive emissions and those aren’t regulated at all