How many countries are left where you can buy an anonymous credit card in exchange for cash? That is, over the counter in a physical store?

Don't the Know Your Customer laws banks have to adhere to mean that anonymous cards are essentially a thing of the past?

In the UK you can buy a "travel card" with cash at any Post Office counter, they are just regular MasterCard cards and can be used like any other debit card, including online purchases. They are even reloadable and contactless too.

Post Office travel cards are not anonymous. They have to be activated and photo id is required to buy them over the counter [1].

[1] https://www.postoffice.co.uk/travel-money/card

It might be far easier to buy crypto via an ATM. Sure, it will cost a bit more but you will have some anonymity.

https://coinatmradar.com/

Very common in almost many stores in the US, Large companies like Walmart, CVS, Walgreens, sell them

Plus in many places you can bring in Change to a CoinStar can convert your coins to a Visa Gift card