Tell your husband he’s wrong.
When I was driving long haul the wife would cook chili beans, spaghetti, beef stew and whatever she thought of.
She would freeze it in meal size bags and I would take it on the road. Yes, I had a small freezer in the truck.
I never had a problem with tough or bad tasting beans of any type. Pinto’s, butterbeans, string beans, they all came out good.
Thanks. I will let him know :-)
Your wife sounds like a prize!