Don't forget that one of the tacit reasons for G+'s existence is simply to have a reason to encourage G+ buttons on each page for further tracking of what's happening on the internet. Using a single identity helps to reconcile a unique user that help both the advertiser reach "uniques" and for Google to better understand that user's behavior.

Back to the point: Google's ethos is to track and analyze as much of what's happening on the Internet as possible. If, as an employee, you don't appreciate that this is Google's bread and butter, you simply may not care enough about these things to ever get worked up about G+'s account management.