What is Modern Vipassana?

The more I learn about the modern Vipassana movement the more I feel it promotes an incorrect or inadequate view. But I don't know the movement well so I thought I'd ask what others here think about this increasingly popular approach to the practice. It seems to discard much of the Buddha's teachings and focus on a quite mundane approach to living that has no metaphysical justification or philosophical significance, bringing some of the benefits of meditative practice without requiring the aspirant to commit to any particular idea of Truth and Reality. Is this the case? Have I got it wrong? What do you make of it?