I have been living in UAE for more than a decade now and I didn't see this happening to me when I travel. I just don't bring anything against the law. Simply put you can't complain if you break the law.I think there is much more to the stories we are not being told and UK press if famous for defaming UAE in this way. There is a guy who brings baking grade poppy seeds from Europe (if you can't miss 0.02 you can't miss a full bag of poppy seeds either being brought more than once) and he was never held or anything. In fact he was not aware until I made him aware.
There are people who have been living here for more than a decade and somehow nothing happened to them despite plenty of travel trips including trips to Amsterdam for obvious reasons.
Also never say never. I know a very rich guy who was always against muslim countries and somehow since recently he seemed to forget what he was saying years ago. He is a regular to Dubai now with his family