That's a good question, I think it's much more complicated, as if you send from one bank to another then I think it's quite difficult to revert the transaction as you will have 2 banks involved and you will need to file the case, etc. Based on the PayPal speed of transaction reversal I suppose they use ai or some sort of automation to make it happen. At it's inside their system so it's just moving numbers for them. I was even thinking about doing the same and document everything just to show how stupid the system is and how easy it is to scam people. Then post it somewhere and then maybe it will get some attention:) I would send the scammed person money back of course after I can prove it works;)