I know what communitarian means- I consider myself one, after all. "Right-wing communitarianism" is perhaps the most succinct way to describe my beliefs, actually. I was merely observing that it is a rather unusual thing to say. I would strongly reject your claims of an "ethnocentric bias", however. The rest is pretty spot on, though, your evident skepticism aside.
Ethnocentrism is not requisite of course. It's more common among those who are both communitarian and ethnic nationalists. I am a little skeptical though, aye, yet suspect communitarian ideas are better than their liberal counterparts at promoting a healthy society. The tradeoff left-liberals like me make in fixation on individual interests and happiness is to risk creating a society cursed with flagging work ethic, trust in fellow citizens, and commitment to civic duty - I suspect on account of undervaluing discipline!
You are correct. What society needs is greater civicism, a stronger work ethic, and above all, more discipline!