Can you provide concrete examples for this? I work with Elixir every day and your statement does not resonate with me at all.
Integrating with third party services and doing mundane things are generally no harder in Elixir than any other language.
Now it wouldn't' be any harder to write these libraries in elixir vs ruby or laravel. The difference is there are well polished libraries for both those platforms you can just drop in and use. That makes what could be a week of work in elixir, about half a day in ruby by virtue of the work largely being done for you already.
If the library doesn't exist for either, then I agree, elixir isn't going to be any harder to integrate.
And then found out it was abandoned. But everyone is moving to open telemetry.