People agreeing with this article clearly fall in the category of the people it's describing. It's about the friends you keep. It's about how you set up your newsfeed to treat their posts. G+ isn't better than facebook (or Twitter), primarily because G+ IS facebook (and Twitter), except for the people on it. G+ is too young, it hasn't gained the kind of momentum the other two have, and it hasn't attracted the overly dramatic, constantly posting every-little-detail-about-their-day nitwits.
Your facebook can be exactly like your G+, if you only chose the correct people. So saying "I've felt so happy ever since I deleted my facebook" is pointless, cos if you had the same people on G+, you'd have deleted this by now too. Oh, and no one's forcing you to be all unhappy about other people's posts, least of all facebook. Honestly people, instead of trying to be all intelligent, actually do it, please. Humanity needs you.