Because all the previous cars I've owned defrosted with A/C on and HVAC set to defrost.
Besides it's hot and humid in the morning.
Clean your window too. Particles ("condensation nuclei) help condensation form
Driving usually helps too because the friction of the air moving over the windshield rapidly warms it up to the ambient air temp. But in the meantime, warm up the engine and direct some heat at the glass.
Um, what? If you were driving faster than the speed of sound this may be true, frictional heating doesn't occur at low speeds. It's not friction heating the glass but the moving air absorbing the moisture and then the glass warming to ambient temps.
Heat and AC to dehumidify actually.
I*m telling you guys. Try Aquapel.
Yes, the record button needs checking.
Here is that cabin filter vid......
https://youtu.be/_WkPEjMj1OE