Thank you. Your post does a much better job describing the potential than the link does. Something about the idea of “javascript containers” resonates with me, but Ryan’s post seems a little unfocused.
Javascript the language will be around forever, but I don’t know that I’d call it futureproof. Just because it’s there doesn’t mean people will continue to want to use it, particularly if wasm as a build target for other languages becomes more realistic and/or practical. However, javascript the technology (i.e., highly optimized and hardened runtime coupled with wasm) is pretty remarkable.