highly problematic because it’s hazardous and radioactive?
Thing is, there’s very little of that waste, with much less impact than say, burning coal.
Also, it’s highly radioactive only when taken fresh out of reactor - this waste is stored in pools, until it decays. What you’re left is weakly radioactive, long term waste that needs to be buried for a long time.
Because wind and solar don’t have the on-demand capacity. Even with batteries, you can’t count on them to deliver power reliably