Are you going to correct a lawyer? That the product has been delivered or not has nothing to do with it. Nor has 'friendliness' or 'blackmail'.
The buyer did not receive what he could reasonably expect from the seller.
Any idea why Paypal has a procedure in place if the product delivered does not fulfill the expectations of the buyer?
Period.
he expected more than 3 mb/s to HF on a EU rdp?
That's not reasonable