What about the rationalisations of those who cut corners and wine to make even more profit when they're already so rich it's become a health issue for them? How is it the sole responsibility of your friends to work around that?

The idea is basically that it's "just the way it is" that the food we can buy in supermarkets, that is made in factories, that GIGANTIC amounts of real estate and logistics and energy are devoted to, that is made cheaper than it would be otherwise (and that is true even if it was awesome quality and mega healthy -- it would be more expensive, but less expensive than doing it yourself, economics of scale etc.) sucks, is unhealthy, you "shouldn't eat that".

Just buy some veggies and do it yourself. It's not so hard to plant some tomatoes, either! Nevermind people in private jets doing airshows... I just can't with how lazy my friends are. It would take them 30 minutes max.

It's not that you're wrong, of course. Both "sides" matter, and you always should mostly focus on what you control. But at the same time, it's better to punch up than kick down or sideways.