Follow the money. Nominee for surgeon general has a stake in wearable tech.
Just like when those scatter machines were forced on the TSA, it's because the person in charge had a stake in the company making them.
My company gave these things away to each employee for some 'fitness challenge' between departments....I never even opened the package. My group was mad at me for not helping win the free lunch or whatever it was .... Until I made them read the privacy policy. Many stopped wearing them immediately