From what I've been told, there are definitely some things you can do that would increase sustainability that would cause you to lose your organic label. E.g. substituting a biodegradable material that doesn't list its ingredients could cause you to lose the label when using plastic wouldn't.
There are a lot of small time farmers there that still grow the same sheep/cows/animals their grandparents grew 100 years ago.
They grow the same veggies on the same rotated soil that was grown 100 years ago, the same way.
Sure it may be a niche but if I'm living around there and eating that food, I think it's pretty darn close to what our ancestors were eating a century ago.
However it's still probably better to eat organic than something which doesn't even pretend to be safe. It's all relative in the end.
I hope one day I can control the sources and attributes of all the food that I eat. However till then I will try to do my best with my available time and money.
You say you stick to organic/natural. Well, it's all "natural", even GMOs, if you're eating plant and animal products directly. (Eg: stay away from additives and highly processed foods.) "Organic" is a bit tougher; you want it to mean that the plants and animals were raised without getting stuffed with chemicals and antibiotics, but there's a lot of wiggle room there because 'food' is made up of chemicals, and many foods and chemicals have some antibiotic properties.
In the end, if you're not growing the plants and breeding the animals yourself you don't really know if the "organic" label on them means what you want it to mean. And except for heirloom varieties, (and maybe even those) the plants and animals you're raising are still the product of the past 100 years of breeding, which usually focused on attributes other than making them healthy to eat.