My 2 bits .. not that it matters of course .. opinions are like __ .. everyone has one...
Fusion > Fission
We already have a Fusion Reactor built , installed, and operating , with a vast surplus output for several billion years more fuel than the sum of all possible fissionable fuels on the planet.
Fission at best is an intermediate / middle step available today ... It's a known dead end road.
I see diverting resources away from the better long term solutions .. Fusion .. and Fusion Harnessing (RE) .. to instead invest those resources in a known dead end road .. to be .. short sighted .. and ultimately less efficient use of net-resources.