"... our engineering teams have put a lot of effort and dedication into building Google+ over the years,"
That's nice, but what they really did was what they do always. They asked themselves, what would Apple do? So they made something where it isn't clear what the timeline is, because posts are all over the page. Where you can't tel; what came when, because they did they same thing they do in GMail, which is something cute like "2 weeks ago", rather than the date itself. To Facebook's credit, they put everything on the page, you may have to look for a setting, but it's all there and it's usually obvious where to go for the commonly-used functions.
Everybody has privacy issues, but Google tells you what they think is important for you and takes away the rest. Then they muck is all up with a pretty-looking but half useful UI.