Well if you believe contrary to observation that the earth is warming, not due to the Sun, but to greenhouse gases. Why would you want to create machines on a massive scale that emit a compound with some of the most potent heat retaining characteristics known to man? Water vapor holds heat. That’s why virtually all of the power generated by humans are basically from large water heaters.
Clouds are liquid water droplets that reflect all wavelengths of light including infrared. They have very different properties than invisible water vapor.