However for me the crucial missing feature is being able to view and comment on your friends' shared items within Reader.
I'm completely OK with Google requiring me to have a Google+ account, and see the sense in the merging of the two 'social networks'. I'm also fine with my shares appearing on Google+. I'm happy to configure a Circle to handle my shares.
But there's no way for me to read the items that my friends who are Google Reader users have shared _within_ Reader, as either individual or merged RSS feeds. This is something I used to be able to do, and now I can't - with no replacement.
That's why the backlash is justified in this case.
PS - Google you could make me happy just by having a 'Friends shared items' menu item which aggregates Google+ shares from Reader. That's all it would take.
I'll have fond memories of pressing 'Shift + S', C, and typing a message to a small group of mates for a while though. Those were the days!