Monoculturally used land just has to disappear, it doesn't scale to life. Cleaning the weeds around 1000 ha of solar panels is probably stupidly expensive and destructive, cleaning them because you happen to grow crops under the panels makes so much more sense. Also, trees and other cultures mixed, where trees provide shade for plants.
I hope that we will one day shake our heads about the stupidity of our ancestors trying to grow exclusively one thing at a time in huge areas, just so we could play with bigger machines and spend idiotic amounts of resources in trying to keep those frankenplants alive.