I think most people feel Google's incessant need to push it on every product leads to overexposure and this hate of G+. To further that, I closed my G+ account a few months ago due to inactivity. You'd better believe that the whole process made it sound like I was going to lose access to my email, my youtube account, etc. It wasn't a positive experience.

They dropped the ball on nearly every major integration in some spectacular fashion, essentially. Be it forced integration, loosing anonymity, or botching up the g-talk's chat history.

The chat history bit me. They used to have a really nice chat history that integrated into the email seamlessly and had good export options. It even worked through IMAP. Unfortunately that all disappeared when they made g-talk hangouts. Essentially it was a duct-tape job like mentioned above. Apparently their storage back-end is quite different and they didn't put the work in to allow for easy retrieval and review of full chat histories. Unfortunately I needed a mass of chat histories(a year) for Visa purposes and the switch was about two thirds in. Retrieving the newer stuff became a part time job :|

Other than that I kinda like G+. I also like real identity movement. Eventually I believe that will be a big differentiator for swaths of the internet. The civil, real name sites. And the seedy, anonymous underbelly.

Forced lack of anonymity and forced integration.

People say that G+ is dead in the water in order to create a tangential economic justification for their actual complaint.

Their actual complaint tends to be valid, whereas their claim about the prospects of G+ is generally bullshit.