This policy change begs the question: Does the long hose have to be so long if one is in OW? Perhaps 40" long to cut risk of entanglement?
FWIW, my shiny new Diverite rig agrees with you
FT Advanced Open Water Regulator Package | Dive Rite
It's not clear how comfortable a whole dive on the 22" hose would be. I'll try it out if I ever get in the water for real. I don't think sitting around in a pool will tell me much.