Sorta, Polymorph in 5e is as I understand it thematically the old Baleful polymorph and regular polymorph put together.
As for 3.5 vs 5e, as I recall Rich has switched primarily to gaming jokes and doesn't consult the rules of a particular edition anymore, if I recall my physical books correctly. Trending 3.5 because that is the one he is the most familiar with.