The correct title should have been: "Google's Management Doesn't Use Google+ For Public Posts". But not so good for pageviews, is it?
"Management caring deeply about their company’s products and using them every day is almost always a prerequisite of making great products."
From my time on Google+, the Google+ team seems to be highly visible and doing a terrific job interacting on the site. It seems like a useful update is announced by the team - not management - almost weekly.
"Facebook CEO Mark Zuckerberg really does use Facebook all day."
Of course, quite obvious from the sheer volume of daily public posts Zuckerberg makes on Facebook.
It seems pointless to continue to dissect this post any further.