I watched this for the second time a week or so ago. And here's the deal:
I'm not sure it's making all that complex an argument.
I'm not sure I like the Johnny Greenwood score that much.
But I like the movie. A lot.
Maybe it never gets better than the opening sequence (excepting the big ol' crash-em-up Greenwood chord), but the whole thing works and works well.
And if it gets better than Daniel Day-Lewis underground, or in the early oil-digging shots, it does so only when Plainview and HW are first on the train together. Brilliant, almost-silent filmmaking.