I have a lot of trouble believing that the author of this page has much experience with iOS development. As such it calls into question the rest of their evaluations. Cocoa programming is the place I can speak intelligently, so I'm going to limit my remarks to that.

Let's start with Objective-C which is being listed as "Enlightenment" on the cusp of "Productivity". Objective-C has been around for 30 years. Check out the Swarm Library. An Objective-C library developed first in the 90's for research into CA. I won't go into the whole history, but it's been a productive language since the mid 90's.

In Text Editors, Xcode is listed as "Challenged" by what? There's no mention of AppCode at all. The Cocoa IDE marketplace is so small I cannot name another editor without going to google. Listing it as "Challenged" may appeal to people who aren't experienced with it, but it's still the accepted tool for Cocoa development.

For iOS Development... I know React Native is popular among newcomers, almost exclusively because they'd rather not learn a new language, but I can name exactly 0 mobile professionals who use it. Yes, I know Facebook uses it. Facebook apps are objectively terrible. They get away with it because React Native is moderately better than mobile web.

/rant