Why is it that with all other sub-species of snake mutations, a ghost is an homozygous double recessive Hypo and Axanthic/Anerythristic and yet, with ball pythons, they are clearly Hypo and yet people still refer to them as ghost?

Didn't Dan and Colette name their double-homo Hypo/axanthic ''The Ghost'', shouldn't the old discontinued Barker term ''Ghost'' for Hypos be given up and properly use the accepted term ''Hypo''...

Curious to see what others think?