Yeah, the card issuers are already making bank from the interchange/issuer/processing fees, as well as interest if the customer eventually isn’t able to pay their full balance in time.

But if you’re a perfect person and always pay your full balance every month, there’s literally no negatives with a credit card as a normal consumer. It’s usually even a better alternative, as if something goes wrong, a credit chargeback is much quicker and easier than a debit chargeback.