However, if you supply an asset based debit card with Bitcoin that has a reliable debit system in place like visa or master card, then there will be the benefit of spending your bitcoins, along with fast micro transactions.
Doesn't that put a third party in the middle, add reversibility, and defeat the purpose of bitcoin?
we could say Bitcoin and debt card system are reliable and fast, but running on different concept of platform. Even bitcoin debt cards are arising recently, allowing your spending your bitcoin through debt card. The underlying platform processing the transactions at the time of purchase is still the debt card system, the different is just to exchange bitcoin to fiat and load the fiat to the card for the spend.