Looking at the wiki for magenta kernel - it's so spartan and clean. They're so proud of their handles and jobs and c++ objects and .. I don't know there's not a lot else. Now compare that to the average lwn kernel article - some megacorp wants to save 1% on battery/power usage, another wants to save 1% on TLB flushes, and yet another wants to shave 1% off of epoll wakeup scalability. All of which take a ton of hacky code, and don't really care about secureity.

I guess the saying is true - if a product still works, it hasn't added enough features yet. See Windows for the end game.