How exactly would the government control our purchases? If they expanded the food stamp program (I'm from the US) to include everyone then that wouldn't be a ba

How exactly would the government control our purchases? If they expanded the food stamp program (I'm from the US) to include everyone then that wouldn't be a basic income because you couldn't use the money to pay rent or utilities or for a car. Basic income is about removing barriers to assistance. I feel this article is FUD directed a libertarians to scare them away from supporting basic income.