Similar to #2187, the Wiki also contains outdated code: The Threading page is still using PythonEngine.ImportModule().
There might be other pages that are outdated, like Loading Python file in .NET and Call function where Py.GIL() is not inside a using. I'm unsure if this is still correct.
I've also seen various code snippets where the new Runtime.DLL requirement is absent, most notably in the README and the documentation.