That does not address the fact that yes, inheritance is one type of subtyping polymorphism, and that many languages have them via OO paradigm.
Yes, there are other forms of subtyping, but saying that many languages don't have subtyping just because they don't have these other forms of subtyping is either cluelessness or satire.
> , “subtyping” might call to mind classes and inheritance hierarchies. However, subtyping is a far more basic and general notion than that.