While all that is accurate, it should be noted that they have already mitigated some of the problems mentioned above (no more displaying number of keys left), b

While all that is accurate, it should be noted that they have already mitigated some of the problems mentioned above (no more displaying number of keys left), but also that the entire system is being replaced this year with one that does not rely on a physical cardboard key card, but can use something like a Yubikey instead. You can also change your username to something other than your CPR-number. Indeed, the problem lies more with other services that has used it as a password rather than 'username'. But those are rarer to come by these days.