What's everyone's opinion on food stamps used like this?

The reason I ask is because I seen a women and what looked like her father at Walmart and they perchased nothing but large cans of ketchup and about $200 worth of can soda they obviously weren't buying it to live off of , and I couldn't help but notice they used a Texas food stamps card ? Now I have nothing against people who use them me and my family have been in a hard time where we were forced to be on them for 6 months and they were a life savor and we were proud the day we didn't have to use them anymore , just wondering if anyone else thinks it's crazy that people do this and think it's wrong ? And why did they do it?