ATMs can help scammers because it is easy to use so victims can buy them more easily. Much better than setting up an account with coinbase and waiting ages for approval
I don't quite understand what you are trying to say.
Victims of what exactly?
Bitcoin ATMs are connected to an exchange and of course you credit card links it to your bank account. That's an identity that is traceable back to you.
They are not yet widespread and most developing countries are yet to get them as yet.