Actually, nuclear plants can be started and be shutdown quickly. Most countries don't do that because a large portion of the investment cost is in construction rather than fuels, so lifting the rods is just a cost center unless the grid is extremely over saturated.

> Well yeah but it's getting phased out on the long-term.

Who will take responsibility for the pollution of that. Saying that it will be phased out doesn't actually mean anything. Every technology and building will at some point in the future be phased out when the time is right, the investments has been repaid, and alternative technology can out compete the old. Current solar plants that is being built today will also be phased out on the long term.