G,
Why don't you just learn another Britiish characteristics, which is "Good Manners"?
You could have just let this go... but you seem intent on becoming offended by anything with which you don't happen to agree.
I'm sorry if my alternative perspective and opinion offends you.. but I won't be bullied by you. I think your post is also potentially offensive (though personally I'm not that bothered by your small-minded sterotyping of the entire Italian nation.. I can only guess that you're from Calabria..

)
Può essere che non può capire l'inglese molto bene..?
My point, if you read it more slowly.. is that the idea that you can be automatically safer just because you turned on the fairy lights
may be flawed.
My
suggestion is that people might assume that because they have the fairy lights on, they can relax about other aspects of safety.
You seem to scoff at the importance of the road surface to safety... which makes it clear to me (as it ought to you , since you seem to be an intelligent fellow) which one of us has probably the wider grasp of what is "real" safety and what may be just an "illusion" of safety.
I only advocate that the fairy lights should
not be automatically switched on.. and that therefore it should be easy for the driver to turn them off. That's all. Why are you so angry about that?
Do yourself a favour.. Buy a little scooter and spend 6 months riding about on it. You'll notice a lot more about traffic, the road, (even the dog poo! A friend of mind crashed his moped after hitting a turd.. really!

) and how it all works... than in 6 years of driving in your car.
But above all, take time for safety while you're out driving. The Spec-Savers comment was aimed at those who say they
need the fairy lights in order to see another car. You seem more offended by the idea that I'm suggesting that you're blind than the idea that there may be people driving who can't see..
If you slow down, take time at junctions, consider your manoeuvers in advance and indicate clearly and in good time, you will be able to "see" other traffic and the subtle clues that will tell you where they're headed. Traffic, like people, has "body language". Take a look and you will see it.
Anyway.. enjoy your car safely. I think there's not much more for me to add to this thread. The answer to the OPs question (how to turn off the fairy lights) was answered a while ago.
Ciao Bacio!!
Ralf S.