The headlights are vented so that the plastic housing does not expand and contract in service through heating and cooling when the dipped/main beam is on. This may not be necessary with 100% LED headlights that are coming through as optional equipment on some marques as LEDs put out very little heat with the light. Vented headlights are extremely common, they are almost all like that.
Sorry to be so blunt on your first topic (not my style at all
), but I find it hard to believe your lights suddenly fogged over when condensation "appeared", having almost the same effect as turning the lights out or down significantly - this could only really happen if on your journey you passed through an area that was significantly colder than where you'd just been (like 10C cooler or more) to cause rapid condensation if there was an abundance of uncondensed moist air in your headlights. I think there might be a little over dramatisation to a very minor inconvenience there.
It's more likely they were fogged over at the start of your journey, perhaps you drove from a well lit area to an inlit area and noticed a difference in lighting focus. The water in moist air condenses on the cold internal housing (most likely starting well after the completion of a journey), and having the lights on for your next journey will start to warm the housing up, allowing the condensation to evaporate again.
My lights occasionally fog up, but I have never been unable to see the road ahead clearly because of it, the area around the Xenon bulb is clear almost instantly because of the heat output.
Have you tried clearing out your lights by putting a few dessicant bags around the opening where you would change the bulbs? This should get rid of any stored water in significant quantities that may remain from transit. Our unseasonally warm and wet winter (so far) isn't helping to dry out the the headlamps - we need some cold and dry air for that.
The pattern of condensation seen on your video below shows most of the condensation affecting the halogen static cornering light rather than the Xenon discharge dipped/main beam bulb on the outside (which you don't have lit). Your pictures don't seem to demonstrate a chronic issue that most others won't experience.
