Whole grain bread or infant formula can be “highly processed” despite very healthy.
In the end someone else cooks for you and packages it. They can cook healthy or not or in between, add a lot of salt or little, .. as always it’s more complex.
1: https://www.nature.com/articles/s41430-022-01099-1
2 https://www.cambridge.org/core/journals/nutrition-research-r...
"processed" and "healthy" are oxymorons.
I think it's better to tell people to restrict themselves to "whole foods".
For one, most all preservation methods are processing, including canning, freezing and drying. You can't possibly claim that frozen or canned veggies are unhealthy