"We Can Become the Religion for Our Time"
I don't think that the Dalai Lama talks like that about his mission in the world.
I think Unitarian Universalism is honest and authentic. I think that it has changed my life, made me happier and made me a better person. I recommend it to everyone.
But its value, and its mission, is not dependent on its success, or even its relevance to the overall culture.