Which if they were practically feasible, still wouldn't be running for another ten years. Whereas the time and money and resources looking for breakthroughs in that ten years, could easily go to renewables and hey, they don't need a breakthrough solution for nuclear waste. They already work and already are cheaper. Literally the solution. Right there.
That's why we've already seen breakthroughs in reactors that use nuclear waste for fuel.
Which if they were practically feasible, still wouldn't be running for another ten years. Whereas the time and money and resources looking for breakthroughs in that ten years, could easily go to renewables and hey, they don't need a breakthrough solution for nuclear waste. They already work and already are cheaper. Literally the solution. Right there.