Doing so where the user had clearly indicated they didn't wish that to happen was even worse.
Forcing users to not be able to independently toggle whether or not services were enabled for an account is another. I neither want my pseudonymous G+ account ("Edward Morbius") nor my personal Gmail account(s) (unspecified) to have any association with YouTube. I simply cannot independently disable the latter, and my data leaks across the services.
I've consequently been experimenting with setting up hostfile blocks of various Google services. I'm in a weaning-off phase right now (I'm trying to unwind my Google presence rather than just nuke it entirely in one go), and I can assure you it's painful. A proxy front-end to YouTube would be helpful. I already have been making extensive use of youtube-dl largely because the UX sucks vastly less than running YouTube through a browser (and in some related side commentary I've seen references that other folks offering streaming vs. downloaded video saw 4x the downloads than streams, for, I suspect, similar reasons).
So, the fact is that Google outed me (fortunately, a pseudonymous profile), despite my clearly indicating repeatedly "no" (and documenting some of those "no's" in earlier G+ posts. I'd even brought this up on a post of Yonatan Zunger's, and, despite his really well-inentioned "Edward Morbius Hrm? If you want to keep the names separate, why not simply click on that option?" response (and I've really got no reasons to doubt his sincerity), 1) the option isn't presented, 2) the workflow I'd think I'd go through doesn't accomplish what I'd expect, and 3) I've reached the stage of a) having lost my trust in the company to respect my privacy wishes and settings in future and b) not wanting to continue jumping through hoops to fix what they broke in the first place.
https://plus.google.com/u/0/103389452828130864950/posts/XVFz...
I don't know what the hell's going on with Google's management team, but something's badly broken. And I do agree with you that they utterly fail to understand the social aspects of communities.