I also think it's a height issue. Taller guys tend to be front footed and shorter guys tend to be back footed. I think it's about your weight needing to go more forward and the heavier part of your body being higher up and converse for shorter guys (lower center of gravity). So shorter guys can be neutral footed or back footed, but taller guys have to lean further forward to get the same fulcrum leverage.
For example: Dane, Jordy, Zeke all ride low/medium entry, high tail rockers.
For example: Dane, Jordy, Zeke all ride low/medium entry, high tail rockers.