Yes, but imho the kool aid is believing that there is (or even should be) "one language to rule them all".

node.js is neat but it's also immature and incomplete. There are all types of "applications" were it would be a good choice or at least worth consideration. But if you pick it (because you know javascript and don't wanna learn Erlang) over say Erlang/OTP for serious a/o large production deployment you're probably and idiot and certainly a "too much kool aid drinker."