Restrictions on SNAP are tricky business. You can't ask someone on SNAP to spend time preparing food. Prepared meals are expensive, often not accessible, and sometimes difficult to prepare for people with certain disabilities. It might seem strange, but I have known people, very poor people, who rely on "foods in bar and drink form" out of necessity. I have known poor people for whom eating fruit is physically challenging.
SNAP changes like this may be better on a population health level, to be sure. On this I have no evidence. But each restriction placed on food for people living in destitution may mean some people go hungry. (And this excludes issues of caloric density.) I would like to see better data, but sadly, there is none.