One of the best things about bitcoin is that it's NOT A FUCKING CREDIT CARD! Let's keep it that way!!
It does keep it that way. Bitcoins are a CURRENCY.
People can use currency however they see fit. That includes storing/using it safely or exchanging for other currencies.
This new debit card simply gives people another option. A HUGE option IMO. (side note: There is no way 5,000 initial cards will be enough)
Having said that, I understand your concern about security.
My own mother had her bank account linked debit card number compromised and thousands of dollars stolen before she realized it. Luckily the bank reimbursed her (tip: use Credit Unions, people!).
I told her it was a BIG mistake using her bank account linked debit card for things (swipe for groceries, gas, etc. = too many vulnerable spots, even dishonest gas station cashiers) in this digital age.
I told her first to get a NEW non-compromised card and account number. Then I told her to set up a SEPARATE free checking account somewhere, anywhere, one that comes with a debit card. Then put only a few hundred dollars at at time into that account and use THAT for her debit card. IMO everyone should use this technique (especially if non-tech savvy) at it limits your possible losses, and increases charges awareness.
This Bitcoin debit card would be PERFECT to use with my security method, as a fund-as-you-go debit card.