Nuclear power presently produces ~11% of world electricity. Wind + solar can scale to that penetration level even without battery storage and in much of the world wind or solar will already deliver LCOE lower than new-build nuclear. Reaching really high penetration levels depends on presently-unknown economics of large scale storage. (Much how the success or failure of molten salt reactors and every other next-generation nuclear dream is dependent far more on delivered costs than physics.)

EDIT: I see that you were responding to someone who is already sure that storage-backed wind and solar will become the only electricity sources. That's certainly a bolder claim than scaling up to match present-day nuclear penetration levels.

They will. I'm an investor, i like to make money, and i hate losing it. So i'm happy there's still someone else on the other side of the trade :-)