> The author both says that we will find a solution to excess energy (eg. Hydrogen generation), and at the same time says we don't have space for baseload. It feels a bit of cognitive dissonance.
The point is that excess energy from solar especially is essentially free, while excess energy from nuclear or other traditional baseload generators is very far from free.
> I still feel that these articles massively underestimate the amount of energy required in the future
That's certainly an aspect. Here in Norway it increasingly looks like we'll end up with a lack of electricity by 2030 or so[1]. However production is just one aspect, another problem is distribution. Even if we tap into all that wind up north in Norway, for example, most of the consumption is in the south, and there's a huge lack of transmission capacity between the north and south today, with no current plans of building more.
[1]: A big factor here is if we want to use our precious "clean" hydro to electrify the oil platforms or not. They need a lot of energy to operate.