

… most vehicles turn the AC on when turned to defrost mode.
The waste heat blowing across the coils is what unfreezes the moisture for it to drip off. It works better as a dehumidifer the warmer the air blowing across it, as hot air holds more moisture. Also cars have a neat little switch to recycle the air, sometimes it’s automatic with ac, this allows cabin air, instead of waste air to also blow across the coils.
It’s not a “natural humidifier” why are you clumping those two words into a singular item?
Also…
There’s your own TIL, you can make a post now! You really are intentionally obtuse, you literally explained how an ac naturally dehumidifies that air, but dance around using the proper term since you’ve got it in your head that it was misused, even so far as to ignore a dictionary definition.
Edit, here’s another
Nothing to do with nature or anything else, but bloviate dude.
And here’s professionals using the term.
Here’s why this happens: Your AC acts as a natural dehumidifier. During the air cooling process, moisture is collected from the air, condensed on coils, and then drained away.
How many more examples do you need? I can go and find a special example for each of your asinine claims here.