>>For hackers, tinkerers, technical people who are interested in pushing their mobile devices beyond what can be done with the stock operating system: ...

I think this is poor phrasing. If it can't do many of the things that the stock operating system can do it is not pushing "beyond" the stock operating system. It is moving the phone into a little playground off to the side. That's fine if that's what one is interested in, but the phrasing gave me a different impression at first.