I totally get it, the people that can afford going abroad like that aren’t going to be the average.
It reminds me of this story about Swedes being the cause of an insult. Apparently they got known in Spain for being lazy no-good bums, whereas they typically are known for being incredibly diligent workers. Turns out the Swedes going to Spain were only ever there for vacation, and thus earned a reputation for never doing work.
Yes, if the panels were in outer orbit, and mostly powering things outside our planet.
A little simplified energy cannot be destroyed only change form, each time it changes it loses a little bit of energy to heat. Over time that means all energy will become heat.
So the only way to not heat up the earth with energy is to either make sure it doesn’t get to earth, or that we let it out.
Orbital solar cells could keep enough light from reaching earth to cool it, but releasing the energy dirtside would mostly cancel that out. So, we cover the earth orbit with panels and use them to fuel space things.
All of this requires more tech, a lot of resources and time to prepare though. And also a feasible way to store and use that energy in space. Maybe we shoot batteries at a moon base or orbital mining operation?