Okay, but this summary of the UN report is emphatically not "only looking at the downside". From the piece:

"“This report is not a case against artificial intelligence, a technological transformation that is improving the lives of billions of people around the world,” said Professor Kaveh Madani, Director of UNU-INWEH who led the investigation team. “It is a call for using it responsibly and addressing its unintended impacts proactively to make it sustainable and equitable.”"

It is impossible to judge of the net benefit is worth the cost if you don't know the cost. More specifically, "The report finds that AI’s environmental cost is being systematically mismeasured."

Its key policy messages even include: "AI within planetary limits is achievable. The report’s central argument is constructive. Capability and stewardship can grow together, but only with measurement, transparency, and shared responsibility across the ecosystem."

You can also see it's not anti-AI by how it argues, for example: "Governments should integrate AI infrastructure into energy planning, water governance, and land-use permitting, and require standardized environmental footprint reporting."

The report itself praises AI even more, calling it "a defining technology of the Fourth Industrial Revolution, moving societies beyond digitization toward the optimization and automation of complex systems", along with an overview of its transformational benefits.