Definitely good points. Your first is one of those really small, but also really annoying things about Erlang. I spend a lot more time with Elixir than Erlang, and while the first one is addressed, and the the second one is mostly covered, printing is still a pain point for people new to the language. Once you understand the caveats, it becomes a non-issue, but it's certainly frustrating for new users of both languages.