They added a banner which states "Network fees apply".
For everyone's information, I filed complaints last year with the Dutch Advertising Code Foundation and the Belgian FPS Economy regarding false advertising. I don't know whether they actually handled my complaints, because they are not willing to provide that information.
Anyway, it took bunq one year to add that banner. Inexcusably negligent.

@emily-Blue-Wolverine#281695
I recently came across this issue too. This very much looks like false advertising.
Fees, whether you call them 'network' fees or something else, remain fees. If you need them to cover the maintenance of a "complex network of branches, entities, and partnerships" that's fine by me.
But making statements such as "Traditional banks charge you extra when using your card for payments in foreign currencies—we don’t!" are simply incorrect and misleading (cf. https://www.bunq.com/features/zerofx).