Yea, years ago I was in the security space and got to talk to some paypal security folks at a symposium in San Diego. The level of stuff that they have to deal with is so extreme.
It's similar to how people don't like sites blocking entire countries or access from Tor, etc. You might be doing it for privacy...but all the people trying to commit fraud are also using those same channels to hide their identity. The blockades are one piece of a holistic security picture that frustrate the well intentioned users.