This is why I don't like working with Ruby teams. Of course you can write straight-forward Ruby code and I encourage it, but Ruby does seem to attract developer

This is why I don't like working with Ruby teams. Of course you can write straight-forward Ruby code and I encourage it, but Ruby does seem to attract developers who like to write "dynamic" code and use "meta-programming" (what we would call "reflection" in other languages, where it's made intentionally difficult). I think it's mostly the influence of the Rails framework that leads developers towards "magic", although it doesn't help that Ruby makes this kind of programming especially easy.