We'll be eating genetically engineered meat. As in lab grown muscle tissue, no need to even raise and then kill a cow. We can use the land reclaimed from animal husbandry applications.
While this is probably (hopefully) an exaggeration, I think you're dead right. The downvotes seem reflective of a delusion in the tech community that we will find a technological solution to any and all of the global problems we are likely to face soon. I wish people were more concerned about this.
If you think sea level rise is the only problem and, if it were, you think 10m is not enough to lead to complete societal meltdown in some places, then we clearly need more hyperbole.
