Cink On Grooves: "the new grooves are really an indirect way to attack driving distance"

A pair of recent Tweets from Stewart Cink on the upcoming groove rule change:

New grooves next year mean 10% less spin from fairway and 60-70% less from rough with short irons. Players will use softer balls I believe.

IMHO the new grooves are really an indirect way to attack driving distance since softer balls go shorter in general.