Hold the phone there. Plenty of hickory greats, like MacDonald Smith and Sarazen had very strong grips and were very unlikely to be flippers. In fact, the high-torque shaft would seem to me to react better to drive/hold release of a strong grip players of today like Watney, Kuchar, Sadlowski, etc.
High torque shafts like hickory twist very easily and smooth swings were needed to avoid twisting or torquing the shaft too much.I see it the opposite to you.Bending the left wrist would aid in taking torque off the shaft,not the other way around.I suppose the best way to find out is to get a hickory club and test it out in the field.
I'm also pretty sure Hogan said in an interview that Jone's couldn't cure a snap hook using steel shafted clubs which may have prompted his early retirement.
As for Hogan,I have never heard he ever used hickory shafts.Steel shafts were available when Hogan was a teenager.They were invented in the late 1890's and most probably were available by 1920 or so about which time Hogan started playing golf.