You didn't read the article. This is mainly customer complaints, safety issues, and internal processes. Also, read the actual policy your article references; they aren't suing people for patent infringement (which is kinda cool), but they also haven't released anything. (aren't patents public?)
They Musk open sourced tesla patents 9 years ago: https://www.tesla.com/en_GB/blog/all-our-patent-are-belong-y...