Should Google stop trying to add social features to their core business?

Am I the only one who is beginning to accept the reality that Google should stay out of social? Rather leave that to the guys who have social as their DNA? You know, like Facebook, Twitter and Pinterest?

Back in 2010 Mark Zuckerburg had to this to say:

One thing that I think is really important — that I think is context for this, is that I generally think that most other companies now are undervaluing how important social integration is. Right, so even the companies that are starting to come around to thinking, ‘oh maybe we should do some social stuff’, I still think a lot of them are only thinking about it on a surface layer, where it’s like “OK, I have my product, maybe I’ll add two or three social features and we’ll check that box”. That’s not what social is. Social is. You have to design it in from the ground up. These experiences like what Zynga is doing or what a company like Quora is doing, I think that they have just a really good social integration. They’ve designed their whole product around the idea that your friends will be here with you. Everyone has a real identity for themselves. And those are fundamental building blocks. Now, I don’t know how long it’s going to take to get the mobile environments that you see today to a state where you can build really robust social applications on top of it. So that’s the biggest driving force for us — to try to work with these folks and see how deep we can get on our own to make sure that we can build that plumbing. Our goal is to make it exist.

Raymond Ackerman had a philosophy which he referred to as "sticking to your knitting" Maybe Google should stick to its knitting and not try and add social features to their core business. Doing so in the past has been hugely problematic to their reputation. Think about the end of Google Buzz, Wave, Google Reader, and now the obvious shift away from Google+

What do you think?