you missed judrogen electrolysis which comes out comparable in expense to nuclear when deployed on top of renewables, amd gives the same level of stability?
Yield is a problem, as well as rhe ability to store hydrogen safely (injecting it in the natural gas grid isn't possible when we're talking about off-the-grid scenarios).
And we where supposed to talk about renewable “3 to 10 times cheaper than nuclear”, so bringing a storage technology with an higher investment per Watt than nuclear pretty much defeats the argument.