Now you may say Stackoverflow isn't a good measurement. In Tiobe Elixir hasn't made it to the top 50 https://www.tiobe.com/tiobe-index/
There is little reason for me to believe Elixir is before it's peak, the data is showing otherwise. Elixir's contemporaries (Rust / Go / Kotlin) are at a totally different place usage wise. So I tend to think this is it for Elixir, it's all down hill from here. If you have data showing otherwise please let me know.