Earlier quoted context omitted.
It would be a good idea to remove the 'date' from the number. Edit: because having your birthday right there as part of common ID number is an obvious transgression of privacy that wasn't probably thought of back when the number was established. How anyone could disagree with this is beyond me.
Well it makes it pretty easy to remember. Never heard of anyone complaining about their birthday being known, so it seems to work pretty well.
Having one's date of birth signalled to the world is an obvious breach of privacy in the modern age, and since there is obviously no need for it, it shouldn't be used.
That you have 'never heard of a concern' not hugelry if there are obviously people who are going to take umbrage - moreover - in this new information world order it can be used for all sorts of shady reasons.
There's clearly no need of it.
If the scheme were designed today, there's a 0% chance of DOB being used in the number.