The technology employed by MagicBands allows a private company to track our movements with no government or legal oversight. It doesn't matter why or for what purpose but if the implications of that doesn't frighten you at least a little, then our civil liberties are doomed.
“Big Brother in the form of an increasingly powerful government and in an increasingly powerful private sector will pile the records high with reasons why privacy should give way to national security, to law and order, to efficiency of operations, to scientific advancement, and the like. The cause of privacy will be won or lost essentially in legislative halls and in constitutional assemblies. If it is won, this pluralistic society of ours will experience a spiritual renewal. If it is lost we will have written our own prescription for mediocrity and conformity.” – Justice William Douglas, Points of Rebellion
"The real danger is the gradual erosion of individual liberties through automation, integration, and interconnection of many small, separate record-keeping systems, each of which alone may seem innocuous, even benevolent, and wholly justifiable.” - U. S. Privacy Study Commission
“The 20th century has been characterized by three developments of great political importance: The growth of democracy, the growth of corporate power, and the growth of corporate propaganda as a means of protecting corporate power against democracy.” - Alex Carey
“There was of course no way of knowing whether you were being watched at any given moment. How often, or on what system, the Thought Police plugged in on any individual wire was guesswork. It was even conceivable that they watched everybody all the time.” - George Orwell, 1984