Because “serverless” is a temporary fad on resurrecting CGI.
“Serverless” scripts should be able to start and stop quickly, as these are “run once” scripts. Elixir is very bad at such approach, it is better to have long-standing VM that accepts connections.
On the other hand within BEAM machine it is “serverless” as each incoming connection (at least in most of the HTTP servers out there) is new process, just like in serverless.
