So I finally had the chance to check, and I can confirm that it's possible to drive with just the fog lights without also turning on the main headlights in a Tesla Model Y.
To enable just the fog lights:
Switch the lights to "parking lights"
Tap on the fog light icon to turn on just the fog...
This was a problem with my model Y and I also felt like I was in a snow globe, but at some point there must have been an update because in the last storm I was in, I was able to turn on just the fogs without also having the main headlights come on.
That said, they also take stuff away in...