Those 'protections' have nothing to do with the purchase being credit or debit. They're just artificial incentives from the banks for you to pile on the debt. We frown on that behaviour here in the EU so it doesn't really happen. The same with the cashbacks american banks offer on credit cards, they're just paid by the extortionate card processing fees that vendors pay. So essentially, you are paying for your own cashbacks because the vendors just include it in the price in the end (and usually for everyone, not just those paying by credit card)

Besides, if you want insurance just get a 30€ per year rolling package.