Treating familiarity as equivalent to friendliness is a disservice to languages that have other benefits, and to developers who may not have the exposure/experience to recognize the vast power that is outside their horizon.

"Elixir is more friendly than Erlang" is both subjective and misleading. It's more verbose than Erlang, which to me is not friendly. It has more complex syntax, which to me is not friendly. I don't believe that it has a significantly lower learning curve than Erlang despite its familiarity.