My point is that using an anchored putter removes parts of the swing/stroke, therefore changing it. I for one do not think it is a swing/stroke if you have it anchored, it has now become a pendulum. And based on science one pivot point is much more reliable than having two.
I will never argue that it doesn't change the stroke. It does. But so what? That new changed stroke does not make those who use it better putters. If I could anchor my driver for more stability, I would.
It's not that I can't see the logic of banning anchored putters, I just don't think it holds much water.