Dutch debit cards cannot be used for online payments abroad. So the benefit is being able to make payments to, eg: Germany.
Credit cards are terrible. One has to share a few secret numbers with the merchant and the merchant then takes money out of the cards account. It relies on fully trusting every single merchant to have perfect honestly and security.
Plus credit cards have a transaction cost that is paid to foreign companies. It’s quite ridiculous that a Dutch person buying online in Germany ends up paying a tiny transaction cost to a third country.