Priorities are 100% it. My parents were able to raise me on a single income where any processed foods were a special treat maybe once per quarter. We were quite poor compared to our peers, and a lot of our veggies came directly from our own urban garden. Staples in bulk from the food co-op in 50lb bags, and at least a few hours per day was spent on meal prep from base ingredients.
There is no way you are getting that out of the general population these days without wholesale changes to the entire economy. We are built to keep every working adult busy 24x7.
That's before you get into the inanity (or insanity if you prefer) of social expectations these days re: child rearing.
It need not be all-or-nothing. I've been improving my diet for 10 years, as I started to learn more about nutrition.
Instead of a Crustable sandwich, get some turkey at the deli counter and some prepackaged whole wheat bread. Still processed, but better. Maybe after a while, move to getting bread from some whole food bakery or something. If you don't have time or money to jump all in, start taking steps.
Read it and make a case about whether it is or isn't, this is your idea. Is there merit to it, or does it only dovetail with the same convenient demonization of a habit you can vaguely ascribe to worse parents or poorer people?
No one with a functioning brain believes for a second that HFCS-laden Mt Dew Code Red or Flamin' Hot Doritos Max XXXX Blast Ultra are health food.