The USGA and the R&A have made their decision.
And I, for one, like it.
The governing bodies of the game should have taken this action years ago before it became a firestorm.
The basis of playing golf has always been and always will be a free stroke performed by your hands and arms. Anchoring the putter against any portion of your body whether it be your belly or forearm clearly goes against the basis of golf. No doubt the decision will be debated and perhaps even litigated but the context of the ruling is proper and correct.