"Loaded with sodium" is what the agrolobby wants you to think. If you knew what goes into supermarket burger patties I guarantee you would never want to touch them ever again. Look up nitrates for starter, which is used as a preservative in some meat products: burgers, hotdogs, cold cuts.
I think a lot of those here are likely warehouse club buyers- Costco doesn't add anything to their ground beef or frozen patties. Sams 'seasons' some of their patties, but no nitrates.