So to be clear, I love all of those languages and wish the design space of prototype-based inheritance was explored more.
Having said that: why would he though? In this particular talk he's trying to argue to people who program in C++ why the historical C++ architectures are limiting it, he's not trying to convince anyone to switch languages. So those languages aren't his audience.
Unfortunately, the "history" omits prototype-based OO (Self, Io, Lua, etc.) which doesn't suffer from many of the "issues" cited by the speaker.