I think the point is that wind/solar have scaling limits. Sure they work today, and in the immediate future, but what would it look like to have 100% of daily u

I think the point is that wind/solar have scaling limits. Sure they work today, and in the immediate future, but what would it look like to have 100% of daily usage delivered by wind or solar? Don't forget political boundaries. Not all countries/regions have enough water for huge windfarms or deserts for solar panels. Also remember electricity usage generally grows with time, so how long do you think we can increase by x annually if land use has to increase by 470x? Today there aren't any large regions where 100% of power comes from renewables and we really don't know what's it's like managing renewable generation at large scale. It's not a concern we should be totally dismissive of. Think of the "worst" case more like we're trapped growing a solar installation and need the land from your home to do it.