completely agree eating better food is great and not expensive unless you want it to be.
my issue with UPF is that its a largely manufactured term (ironically). its' vague definition would include or exclude many common foods depending on how strict your definition of "not found in the...
the "issue" of cheap white bread has been around over a hundred years since roll milling made white flour cheap, well before obesity was a problem. UPF is a new schtick to tell us how we're living wrong and not meeting the pretentious-middle class standards.