Organic ensures that the soil where your food came from had no prohibited substances (most synthetic fertilizers and pesticides) applied for three years. Chances are, if you are buying food from supermarkets without the organic label, your food probably came from a farm that uses unhealthy synthetic fertilizers that may attribute to health issues later down the road.
Unless you know your restaurant is cooking with organic food, they are probably not so it is best to eat out sparingly and learn to cook with your own delicious food with your organic ingredients.
If you want to step up your game, you could also buy organic clothes (aka clothes that came from plants / animal) that came from soil without prohibited substances. Your body is covered most of the day so it's better to be on the healthier side.
Obviously, the label "organic" doesn't mean you are getting the best because there is still alot of room for improvement. Organic still allows some form of pesticides and fertilizers and has next to nothing about the organic matter in your soil (which determine how nutritious your food would be).
The article mentions regenerative organic certification, which addresses the shortcomings for organic labels. If we, as consumers, demand for the highest quality food, it turns out to be good for the soil and the long term health of the earth too!
Hands down, if you have a space for your own garden or even pots at home, you could easily grow food that are more nutritious than any food you can find in a grocery store. Optimize for organic matter in your soil. The higher the organic matter, the more nutritious your food is. Most of the agricultural soil that grows food has about 3-6% organic matter, you can easily get it above 10% at home. So if you have time on your hands, you should try growing the food you eat most regularly at home.