Fog lights don’t blind you any more than regular dipped beam lights would. The whole point about fog lights is that they are mounted lower down, and aim downwards at the road immediatly in front of the car to cut under the fog, and thus reduce the amount of light bounced back at the driver. Set correctly they should be no more blinding to oncoming traffic than your regular lights.
Why do people use them? Because most new cars have large alloys prone to cracking when hitting the huge pot holes our roads are covered in. They are hard to spot at distance because of your low position in a car, and even in daylight your normally on top of them before you see them and take evasive action. Fog lights really help you to see the road right in front of you, critically in the area potholes tend to reveal themselves, which is an area that your higher mounted dipped beam seem to leave dark.
Just what you jobsworths find so annoying is completely beyond me? Is it that you haven’t any yourself, or that your economy class wagon doesn’t have the aesthetic large wheels (as stupid as they are) to worry about. If anything you should be chuckling to yourselves when you see someone with their fogs on, as they have obviously gone for style over performance with their wheel choice, not having a little bitch about them blinding you which is horse shit.