I'm not sure it'll be scaled up to the point where it would affect things in a big way. We've had technology that can extract water from air with electricity fo

I'm not sure it'll be scaled up to the point where it would affect things in a big way. We've had technology that can extract water from air with electricity for well over a hundred years (vapour compression refrigeration) and so far it hasn't caused any issues. The ocean is a huge source of water with a massive surface area which would constantly provide a source of humidity, and the lower vapour pressure caused by removing water from air in substantial amounts would encourage further evaporation. That said, local effects would be more pronounced than global effects.