Don't choose Elixir if you just love setting up autoscaled k8s on AWS with redis, RabbitMQ and half a dozen shenanigans for a webapp that serves 10 users a day.
Elixir is my excuse for refusing to entertain the idea of an k8s cluster at work. Completely unnecessary.
k8s solve a different layer of problems, to me they are a complemental tool to elixir when there is a need for that layer, otherwise yes it is completely unnecessary.
Why would you want to deploy an Elixir app on a system that adds an unacceptable amount of latency to the network? K8s is trash for all the stupid network packets being copied from user space to kernel space and back