If we’re trying to be honest here, that’s not an appropriate comparison. Properly disposed-of nuclear waste doesn’t necessarily cause these problems either. When you look at the physical footprint disparities (land-clearing) needed for commensurate solar power generation, rendering such land unusable and ecologically disrupted/destroyed, solar doesn’t come out smelling like roses these days either. If you’re lucky it can be reclaimed more easily but in the daily operation for its lifetime and beyond in the best case, the land occupation needed to power a small town exclusively with solar is pretty massive. Now do a country. Now do a continent.