Thanks for the comments. Indeed KLM's luggage tags are very easily broken. A friend of mine happens to work at the company which makes the FD cards and tags. I have forwarded my experiences.

I am surprised that KLM doesn't issue any tags anymore to BW. So I still have to continue use my SW of which one is broken, or attach my Qualiflyer one which is better indeed.

Someone wrote that one must fly often to get even a free trip from AMS to Eindhoven. There is no difference however to fly EIN, Paris or London for that matter pointswise. It's all 10.000 points return.