People that think this is unacceptable are not remotely average users. Average users benefit greatly from their pocket appliance not being a full fledged computer.
In what way? Seriously, what benefit is there? (And don't say security...)
> you have been infected by 3 viruses, click here in the next 5 minutes or the damage will be permanent
And they believe it. Giving them the power to run any software they want, also means giving everyone else the power to make them run any software they can be tricked into installing.
I'm deeply concerned about how this will impact users like us, especially since we're such a small minority that our desires could easily be trampled by the masses, but this is a clear win for the average user.
(And don't make the perfectionist fallacy w.r.t. Google not successfully preventing 100% of malware)