The majority of people seem to like the idea. But some people don’t and honestly idk why. They have some concerns over how it might affect security and decentralization but it has nothing to do with that. Literally your wallet is 100% safe. The card just acts like a middleman that’s all.
In my personal opinion, it’s very helpful. I’m currently using Bitcoins Vault’s Gold Wallet and it’s really helping me out especially with shopping inconveniences. Also, this way I can get cash back on my cryptos. This isn’t possible using a regular credit/debit card with fiat money.
In a world where we are progressing towards leaving old ways of payments but still haven’t fully integrated crypto into the market, I think crypto cards would serve as a great transitional way of payment. It will also help push the market into accepting crypto as payments at a faster pace which I’m all in for.