People seem to suddenly forget that these transactions are already tracked and individually linked to you. Should we allow anyone to collect that data except democratically elected governments?Both are bad.
People don't like governments tracking their every move because, governments have sometimes done bad things with that information, both historically and even today.
People allow tech companies to track their every move because they're offered something in return: Free access to an app, automatic coupons at the supermarket, etc.
I don't envision the government lowering people's taxes in exchange for more information. Even though this program could help the government craft health policy and save millions on medical care for its people.