I think it can be rephrased as "we're desperate for any possibly glimmer of hope in the face of this existential climate crisis, and fantastical solutions let us imagine the possibility of surviving - no matter how impractical (in fact, the more impossible, the better)"
We don’t need impractical solutions that make no sense. We need solutions that will actually help us solve problems. Growing trees in skyscrapers to make bridges that take decades to create to maybe make the sidewalk cooler is 1) impractical and 2) not solving a real problem.
