"Maybe a nitpick, but given that most other programming languages don't distinguish named vs default, it's probably not necessary" Not sure that how other lang

"Maybe a nitpick, but given that most other programming languages don't distinguish named vs default, it's probably not necessary" Not sure that how other languages do things really plays a part in how JS does things? I think his point is that having them available is necessary, because they both have strong use cases.