@Reddcoin The thing is even though no information is being shared with google, many people will assume it is since it is being run through google aps. And a lot of people who want to stay private wont like the idea that it could be, even if is not. There are many apps out there that say they dont share information with others yet do so it leaves a bad taste in many peoples mouths.
You say more would be willing to use the extension over the wallet, but I have to disagree for the wallet is separate from the browser and thus provides no possible information leakage like browser extensions can have. Which means people will see it as more secure and safe than any extension will ever be seen as.
Not everyone likes having their browser filled with tons of extensions running in the background all the time and taking up memory and cpu cycles and bandwidth with them doing tasks in the background. I for one keep to a very minimum of how many extension I ever allow to run or have installed in any browser ever. I prefer apps to run only when I want them run, not automatically or as background tasks. Which is why I do not like Windblows 8 at all and its live tiles. I dont need it to do things for me automatically I am not lazy enough where I need that level of automation to make my life so called easier.
And the way how chrome always opens up new processes for every extension makes it annoying to many people as well. another reason many will not ever use it and just prefer the qt wallet where it only runs when they want it to be running.
Not saying the idea is a bad one, just may not ever really be adopted by the masses as some hope for since it can be felt as intrusive in how it works to some at least to the older generation of computer users that is more used to things only running when started from a link and not as automatic tasks.
And yes I even disable 95% of windows tasks as well, for most are not really needed to be running like windows like to make it seem they are.