It is hard to reason about. I think if you understood it (meaning you are a core contributor) then you feel like it really helps organize your code and keep everything reasonable. But to a newbie it is the exact opposite.

I know in my projects I use some techniques which if you continued to work on the project you would really appreciate how many problems it solves but it seems crazy to my coworkers. Luckily it's a small gem and I'm the one who works on it but still.