Broken link?

It's done automatically in cars when you set it to the window clear settings, for the most part, and more and more cars have proper climate controls, but that isn't always the case.

Regardless, the reason it automatically turns AC on is because it clears the mist. If you have AC off and find you're getting misting on the windows, putting AC on will probably clear it, even when it isn't blowing on the front windshield it should lower the relative humidity in the cabin. Yes, it will use a tiny bit more electrical power from the engine, but it serves a purpose.

It's also why you should use air con when blowing hot air to demist your windows in your car. The air con cools the air, which lowers the humidity and condenses out some of the moisture, then heating it up leaves air with relatively lower humidity. This is because the air's capacity to hold water goes up with temperature, so if you have the same amount of water in cool air as hot, the hot will feel drier.

Damn, suddenly I've remembered a whole topic that I should have already known. Thank you for the correction.

You don't even have to know anyone, just look online for local maker spaces.