I disagree. Julia has correctnes issues because it chose maximum composability over specifying interfaces explicitly. And those are not just in immature packages but also in complex packages. Compared to other languages, Julia has no facilities to help structure large complex code bases. And this also leads to bad error messages and bad documentation.

Recently we got the public keyword, but even the PR there says:

"NOTE: This PR is not a complete solution to the "public interfaces are typically not well specified in Julia" problem. We would need to implement much than this to get to that point. Work on that problem is ongoing in Base and packages and contributions are welcome."