I am pleased, yet really surprised, that they are letting go if this word. "Worldly" sounds offensive and insulting. I don't think they would drop this word without seeing something they might gain. Seeing how they are bleeding members and the majority of their new members are acquired from procreation within the ranks, I think they see the need to make their religion more palatable to the rest of the world. I think they are recognizing that, as the saying goes, you catch more flies with honey.
Perhaps they will next drop the word "disfellowship" and call it "forced hiatus"!