Simpson called it "a bad rule." Aside from the fact that he was reacting with disappointment that the rule was detrimental to him, I agree with him. I've always thought it was a bad rule. I've called it on myself at least a half-dozen times, and each time because the ball moved for some reason that had nothing to do with me. It's one of the worst feelings you can have in the game of golf.
Where I disagree with the potential new rule is in the wording: The change to the rule would add a clause that if it was "known or virtually certain" that the player didn't cause the ball to move -- in instances where the wind or other outside factors were the cause -- the player would no longer be subject to a penalty.
Seems to me it would make more sense to word it the other way: If it was known or virtually certain that the player DID cause the ball to move, it's a one-stroke penalty. I think it's a lot harder to know that something didn't happen -- proving a negative, in other words. But if you make contact of some kind with the ball and it moves, case closed.