Sam 🇳🇱🇬🇧 Thanks for your opinion, I think you make a strong point about it being a key feature of bunq for which you pay.
One thing I need to clarify is that the 'ad' is a bunq referral link, the one you can also share with your friends. You will get €10 if someone signs up using that link. Also, there is no third party involved as bunq is the owner of the ad.
I personally think this should be an option (especially for business users) and not be forced.