Martin, I hope you are not offended by my post. I did not post it with the intention to give comment on your decision to make the picture.
You are right, it is difficult to understand why some muslim have issues being photographed and other don't mind. Maybe it has to see with the local sensitivities here in Belgium. Maybe it has to do how fundamentalistic the peoples profess their faith. I remember visiting the Fatih quarter in Istanbul. I was strongly advised not to take my camera with me for mentioned reasons.....
I think, shoot or not, is something to assess at the moment and depending on the situation and the uniqueness of what's happening in front of the lens....
Kind regards
Ivo
Not only the muslims, I think
Almost nobody I know likes tourists or similars clicking their cameras on oneself and publishing the results some where.
I remember coming to an indian market somewhere in South America.
Seeing my camera and intuiting my intentions an indian lady approached me and quietly told me
"You know, there were some tourists last day taking photographs of us like we were animals. Some of us got some big rocks like this I'm holding now and threw them to them until they were gone".
"Shame on those tourists!" I answered - and put my camera away.
Yes, paying does sometimes work, but then they are your employees, in some way.