The point was illustrative. We already have nuclear, the only point of advocating nuclear is if you want to increase it. Unfortunately, a 35% nuclear grid costs more per kWh than a 30% nuclear grid, and I don’t think most nuclear advocates understand why.
Your 50 MW/200 MWh numbers are basically what it costs for a 100% solar grid. So it’s not even clear if any nuclear would be cost effective in most areas. Alaska and Russia clearly can benefit from nuclear power, it’s not obvious if California, Texas etc will.