You can't be serious. Android's layout XML somehow manages to combine the general awkwardness of HTML+CSS with the overbearing verbosity of enterprise XML formats.
It's probably because Android's format was originally designed for simple keypad-operated mobile layouts, and then was painfully extended for touchscreen applications.
Loads of HTML5 applications around the web say otherwise. While the HTML approach is indeed rather awkward to use to build applications UI, its flexibility more than makes up for it. Compared to Android XML Layout files, I still prefer HTML.
