Of course it's been "covered" before, but just like patch lube and caliber "needs" everyone has an opinion.
It was fairly dismissed the last time I saw this one go around. I've never tried soaking, and don't care to. I prefer making RR from
splits rather than store-bought sawn stock. Heat to straighten if necessary (but a slight kink here and there keeps it tight in the pipes). Grain is King in most all of wood strength/flexibility issues. If you look around you can buy split blanks to round out your own without taking a saw to the woods.
Or soak 'em. Or go nuts trying all the various tree types for stock (where split will beat sawn again). Have fun with them packin' sticks. I shot one into three pieces once...(sawn!).