Britt I hope never because I don't need Dutch banks that I have nothing to do with to know my bank details. Today between Dutch banks, tomorrow between all European banks and then world-wide? Maybe fraud prevention should not be based upon distributing everyone's personal data. Could even lead to more fraud in the long run when all this data leaks, as is inevitable whenever you start collecting it at a central place. Decentralization is our strength, not our weakness.
Anyway, just my personal opinion. Maybe bunq will reconsider this in the future, but then I'll reconsider my banking choices.