TIL that in 2020, Burger King ran an advertising campaign featuring a picture of a moldy Whopper, to prove that their burgers are made without preservatives. This unconventional advertising method worked, increasing sales by 14% (according to multiple sources.)
Not all preservatives are “salt” and not all of them are good.
For example, trans fats.
Sure, there’s plenty of preservatives we don’t use anymore because there are way healthier alternatives. But there’s also plenty of anti-science people who fearmonger about any and every preservative despite knowing nothing about its chemistry or even any claims of harm.