I am not a specialist but the current situation looks complicated and not because of waste disposal but for financial reasons and long term planning issues. Areva, the main civil nuclear actor, made a couple of very bad (and shady) decisions, lost a lot of money, and is currently being restructured and partially merged into EDF, the historical energy French provider. Still they decide to keep betting on EPR power plants and engage a lot of resources in a new Hinkley Point EPR project. None of which have been finished yet. At the same time, inquiries reveal deficiencies or falsifications on quality assesments on supplied parts. The gravity of these is not clear yet. Finally, budget are tightening and plants arriving to their initial end of life dates are being requalifed for a decade or more.

I do not think relying so much on nuclear energy was a bad move but it should have been a transitional thing (to renewable energy, fusion, anything else?). And it requires good forward thinking, commitment and the kind of leader we have not had for decades.

Finally, the EPR looks more and more like a big mistake. Smaller designs might have been more successful and offered more agility in time of crisis.