As someone who also came from Python I can't say I'm a fan of Elixir's docs either.
I often find myself having to externally search for Elixir / Phoenix resources and when you compare Python vs Elixir in that regard it's no contest. Almost every web dev problem you could think of is solved in Python with tons of examples, practical applications, blog posts, YouTube videos and the raw docs themselves. You'll almost certainly find high quality code you can at least work off of.
Where as with Elixir I find myself hitting dead ends in a lot of places and the docs often don't have enough details or context to understand something unless you're already an expert in which case you wouldn't need the docs. There's often 1 liners that expect you to have an understanding of the language that rivals its creator.
At the end of the day it's not really about the literal documentation. It's how fast you can go from being stuck to unstuck and walking away with understanding how you got from stuck to unstuck.