I promised to post some result of my efforts getting rid of the coating. The first image (unfortunately it isn't very good quality) is showing the degraded coating. Every single white stain is a little worn off area.
I then started to remove the coating first using a very soft duster and just some water...
As you can see from the image, about 60-70% of the coating went off (USING A DUSTER + WATER). I can assure everyone, I just used very gently force. It was more a massaging exercise then anything else. It took about 20 minutes ONLY.
To get of more of the coating I had to use a little more "force" or better different materials. I now changed to a cotton kitchen cloth (the ones you dry your dishes with). Still pretty soft material. An I also used a windows cleaner (one I have been using for the last 10 years on my Plasma TV without any problems). With a little more pressure force and another 30 minutes or so, I got this far...
This is about 90% of the coating being removed. As to the rest of it, I have not managed to remove it. I used high percentage alcohol, other kitchen detergents, I even tried thinner (for oil paint) and a special cleaning oil of Dinitrol. No luck, the rest of the coating sticks as if it is burned right into the glass.
So somehow it seems to be possible to have the coating stick no matter what.
I will continue to experiment to get the rest off. In the meantime I ordered a anti glare screen protector as the screen became pretty much like a mirror (what was somewhat expected).
added comment:
Dear Apple,
I'm sure you have the money to waste a few screens to try any kind of chemical or method that is reasonably easy to be applied by us users to remove the coating and replace it by an anti glare protector screen. Maybe you can even test a few screens and recommend a few good ones.
Sure all participants here having this problem don't mind spending an hour + $30 to resolve the issue.
Thanks for listining
Matthias Wille