I have the Crypto.com Visa card, and am based in Australia, the biggest draw back for me is having to pay exchange fees to convert into SGD as most of the Asia pacific cards are licensed in Singapore.

The exchange fees often exceed the rewards. I know crypto.com is looking to launch in more local currencies to avoid this, I think they already have USD, CAD, GBP.

The good thing about them, is that I get my Spotify fees rebated, which makes it worth it. You did mention Netflix too, but that's only for the mid-tier cards, where you need to stake $1000s.

Great write up, there are other cards too, like BlockFI, seems like everyone is jumping on this bandwagon.