It could positively influence bad auth practices.
Whoeves did this is an utter idiot, a profoundly inconsiderate hacktivist, whatever that shall be.
If this data was so easy to get, any state actor probably had it for years now. Also powerful criminal organisations.
Wasn't the harm potentially done already and this might trigger a change? Maybe now all those banks will not accept whatever data is in this leak as a way to authenticate a customer. In that scenario we would be in a better situation because of the leak.