One of the key problems with choosing to home-school via the use of state or federal dollars is that you are then required to take the state ASSESSMENTS. That's the big "catch" to the choice.....You can't test what you don't teach.
"We stand for Home Schooling" does not demand lock step uniformity, but rather warns us not to get caught in the "Government school web". "No Child Left Behind" is a title carefully chosen and means what it says. They have designed an ALL inclusive system with single "points of entry" built in all along the way from 'cradle-to-grave'. This proclamation serves to point out some of those "points of entry" that may jeopardize your independence.
Bennetts K-12 program is available to independent Home Schoolers and does not have the State/Federal accountability ASSESSMENT albatross attached unless they accept state (tax) dollars to pay for it.
I'm fine with that warning for the very reasons that you stated. Unfortunately I have seen homeschooling organizations go the route of lobbying the government, opposing these types of programs. That's where I have problems because in that case it a homeschooling organization seeking to limit the educational choices of other families.