I tend to believe that the wood we get today moves and shrinks much more than it did before 1990's. so what we could do back then, has changed to adapt to the problems we found when using the younger wood products. such things as floating corners, glue, screws, thicker tapes, more use of stronger muds, putting a million lags into one 2x4 corner post just to keep it from doing a 180....etc.