I didn't read this fully but it seems the problem with your conclusions is the failure to assume that not all players in a 9-seated game make it to postflop play. Obviously, not all outs are always clean, but the modification of pot odd calculations based on whether or not our outs are clean is very situation-dependent - we can't just arbitrarily decide how often we may count our outs as such and apply a hard and fast rule to all postflop situations.