What?
If you can't see the difference between anchoring to chest or belly and in your hands, then that's too bad. I've tried those putters and it's clear that fixing that end takes a lot of movement. I never used one for a long period of time but just in trying them, I think I could get pretty damn good at putting. Under pressure, I don't know what happens but I would imagine that end being fixed takes some shake out.
Ok then, what about those massive putter grips? Isn't the intent of those to also make putting easier? Isn't the purpose of every new driver to eliminate side-spin on the ball while improving length? Isn't the dimple layout of every new ball meant to eliminate unwanted spin as well? New shafts meant to create more torque?
I understand the physics of creating another anchored point makes it easier to keep the club steady, but there are innovations in golf each year that are meant to effect the physics of the flight of the ball. To pick out this one thing is silly. I was for this rule change until I really thought about all of the ways people try to gain an advantage in golf.