It is also perfectly capable of meeting dispatchable loads like heating, chemical production, and EV charging, and adding them to the grid will bring the ability to meet electricity even higher. Considering the storage and dispatchable low carbon energy that already exists, the remaining part would produce less carbon than would be released by expanding Uranium mining.

There is not enough uranium to meet 50% of world electricity demand using current technology for long enough to wear out a single generation of wind turbines or solar panels.

Your imaginary all nuclear future is both impossoble and worse than the trajectory we are currently on.