I agree with you that Erlang usually is not in the category of 'boring' technology.
It's pretty risky for most teams. Despite Erlang was old, those ideas are both alien and novel to most people. The idioms, the patterns, and the architectures are not well explored as mainstream languages. In my personal experiences, there are also many rough edges.
With that being said, the example I raised just to illustrate that the WhatsApp founders had deep understandings of Erlang despite it was a niche technology. The same applies to FreeBSD. Those are the so-called 'boring' technologies for them.
It's pretty risky for most teams. Despite Erlang was old, those ideas are both alien and novel to most people. The idioms, the patterns, and the architectures are not well explored as mainstream languages. In my personal experiences, there are also many rough edges.
With that being said, the example I raised just to illustrate that the WhatsApp founders had deep understandings of Erlang despite it was a niche technology. The same applies to FreeBSD. Those are the so-called 'boring' technologies for them.