It's no short-term thing, but it's the kind of thing that I might get to see in my lifetime. And it's certainly something that should get engineers excited, even if it's just considering what's theoretically possible.
Also, as the 2nd video notes, though it does send more heat through to earth, it's trivial in comparison to greenhouse effects, which are the kind of things this could mitigate, not just by cutting down on greenhouse gas emissions, but by providing enough cheap energy to make carbon capture feasible.
[1] https://www.inverse.com/article/60712-spacex-starship-elon-m... [2] https://www.spectrolab.com/DataSheets/Panel/panels.pdf [3] https://modernize.com/solar/panel-cost-calculator#:~:text=So....
Edit: 500 days. Don't trust me with math.
While I don't think using the energy on earth is a good idea I'm sure it would work out for space based manufacturing. If you can send the silicon modules to space and manufacture the rest onsite you could probably make it economical.