Wow, I don't think anyone who commented here actually read anything in the paper. I strongly agree that Mozilla makes constant mis-steps and that the scope of web browsers is hugely problematic, but to dismiss anything they say outright over those concerns is very immature of the readers commenting here. Start from page 38 if you want to quickly get an idea of what Mozilla is complaining about here -- and they're goddamn right to complain about this.
I haven't seen such a poor discussion on HN in a long time.