Energy density is a physical argument that is pretty sound. If you get more energy from less material and land, that can lead directly to a smaller land/material/waste/emissions footprint and therefore a smaller overall footprint. Nuclear being borderline magical here due to E=MC² is the key argument in support of splitting atoms for civilian power. The large land and material footprint of low-density renewables is only barely beginning to be noticed, though they still produce less than 5% of the world's energy. At scale it will be serious, mark my words.

EROI for renewables, especially as it decreases substantially with added storage at scale, is by some accounts (the paper linked) troublingly low. If you have to put in roughly the same amount of energy into a system as it produces in its full lifecycle, you run into issues. This is another good physical argument for nuclear.

One can state they're failed arguments, as anti-nuclear propagandists always do, but that alone is not, as David Deutsch would say, a "good argument".