> There's a fair amount similar but things like message passing are implemented as a library in gleam [0] rather than being a part of the core language, so you might say the big things that make erlang _erlang_ are not part of Gleam directly.

It's worth nothing that while `!` and `receive` are in the core language for Erlang, OTP (the actor framework and what people generally consider the important bit of Erlang) is implemented as a library, just like in Gleam.