I once read that LED headlights have pretty much made fog lights obsolete. Don't know how true this is. Here's an article I just dug up:https://blog.cargurus.com/2017/07/05/fog-lights-the-latest-in-obsolete-car-tech
The LED foglights on new Mazdas now are small by nature. LED headlights are larger and have the tech in them to do more (AFS/ALH)