Forty-plus years as a life-scientist and I never heard of this rule. Must be a straw man.
Nope. The Evolutionists are being forced to come around to what Creationists have been saying all along. The dominant pattern in nature is Devolution, not Evolution.
Living in a mileiu steeped in progressivism, even as Darwin was, everyone is bound to be influenced to think of things this way.