>Buyer protection has rarely been something one needs.

I disagree, I think it is the biggest factor. I used it several times and I know other people who have too.

>you can't (easily) charge back already effectuated transfer

I promise if you try to do something involving bank transfers without doing some form of 'Know Your Customer' you'll get people try to use bank accounts that are compromised in some way. You'll be getting calls from your bank and potentially lose money, and may get your bank account closed if you persist with that behavior