From my experience the positivity is not unwarranted, Elixir is a great, young language with an awesome community (as most new languages have). The creator, Jose Valim, comes across as a very nice person and I feel that a lot of the positive attitude in the community stems from this. As to the language itself, it feels well designed and fun to use (the pipe operator is really cool). Plus it runs on the Erlang VM which is an incredible piece of engineering. Overall a great next language to pick up and experiment with, plus it has reached a good level of maturity so you won't see your code break from one release to another.
