Nuclear waste is essentially a non-issue today. Even if there was a way to magically make spent nuclear fuel disappear it would not materially change the prospects for nuclear energy. And if all other issues with nuclear were resolved (the primary one being cost), storage of spent fuel in dry casks for several centuries is a fine and economical solution.

The only scenario in which waste processing becomes an issue is if nuclear is so wildly successful we start running out of cheap uranium and need to do reprocessing and breeding. That is not the world we live in (this is also why thorium is a non-solution.)