I think you mistook a barrier to entry (getting over the syntax) for a permanent cognitive load. At our company we don't care if you know erlang or not, but we

I think you mistook a barrier to entry (getting over the syntax) for a permanent cognitive load. At our company we don't care if you know erlang or not, but we expect a developer to learn it on the job and have had no issues either with junior or experienced developers. All who've tried it are amazed at the productivity.