For what reason? You just said "that's why" with no context.
Because a lot of people do not wish to have to go through the process of being 'verified' by another institution.
We have a decentralized currency, why would we want a centralized body telling us if and when we can make transfers ala Coinbase?
To each their own opinion. All services (even if based on a decentralised currency), at this point in time, will require some sort of verification for higher limits (for the debit card).
You may still order a card with the basic limits with absolutely no verification, just a valid shipping address.