I'm not defending the WTS, far, far from it, but there are just some things that cannot be avoided like money without causing a significant hardship.
So, the Watchtower chooses to allow some things with pagan origins, but condemns other things, completely based on convenience. What is the justification for that? Why do they get to make those distinctions, but not others? It's completely arbitrary and they know it, but they still condemn all other religions for drawing the line in a different place.
I am not saying they are wrong for using money, I am saying they are being ridiculous for making any of these things an issue, and hypocritical for pretending they are being so pure, when the ignore the origins of a practice when it suits them.