Well you said it: Your Husband is a trainer. So he has more knowledge about it than a typical layperson. And it is more commonplace for him/you to eat that way.
So thus, you are more aware of food choices and making it and you have it in your home.
A lot of people do not even know all that stuff.
It can be a lot of info for most Moms, to incorporate into their daily lives. And then along with budgeting and the many food preferences of a family.
But, a kid if they grew up on that, don't know any different.
But most people do not grow up on that manner of eating, thus, changing one's palate and food cooking, is a mountain to change and move.
And then there are cultural foods and ways of cooking.
And then, some people are just not adventurous with trying other foods.
So many factors.
But basic healthy eating, is attainable.
But some people will not even eat brown rice. Nor whole grain breads.
It is good you and your family eat healthy.
But eating healthy can be done in many ways.
You have a good thing going.
Your kids are raised on that palate.
I consider my family as healthy eaters. I cook from scratch, I know how to cook, I don't cook junk, I cook balanced meals, we do not have junk or processed foods in our home or very scantly.
That is, per my family's palate and tolerance levels, fine.
What they eat or do outside of the home, is another thing.
But I think most people, know about common sense healthy eating.