I feel as if that is probably where he'd start off any new species he keeps if he hadn't kept it before. 75-84 is really the middle range of most species kept anyways so unless someone has a snake that has specialized situation I'd imagine it could be used as a catch all. He mentioned thats what he keeps his commercial snake collection at, that includes the following species:
Green Tree Pythons, Woma Pythons, Jungle Carpet Pythons, Blood Pythons, Diamond Pythons, Inland Carpet Pythons, Boa Constrictors, and Ball Pythons.
He did say that it was what he keeps all tropical pythons/boas at though.