To a point that is correct. For simple button actions that trigger a web request and display content, I would agree the knowledge is there and available. For an

To a point that is correct. For simple button actions that trigger a web request and display content, I would agree the knowledge is there and available. For any deeper skillset, photo manipulation, live camera, geospatial or map related code, webgl, etc. Solutions in those spaces are just as undocumented on any platform and require a sophisticated developer to write complex code to solve. A developer with the caliber required to solve those problems will be comfortable in any language they are asked to write in.