Some, but not all, people who have a strict attitude about what they do themselves, also have a strict attitude about what others should do.
Like - I don't smoke. I have a sensible lifestyle. Those smokers are stupid. The same can apply to any part of life, including organic foods.
Some people develop an attitude of genuinely feeling superior to those stupid smokers, or those stupid people who don't eat organic food.
Some people get into the habit of putting others down, in an attempt to show how good they are. It is normally people who feel inferior, and are trying to compensate for it.
These things all lead to a bad attitude.
But as I say, some, but not all.
It is good to have high standards yourself. But it is not good to have a bad attitude towards others as a result. You should be a good example in all aspects of life, particularly how you treat other people.
If you understand more than others, try to share what you know, instead of acting superior.
Those observant people may have noticed someone on curezone with this attitude. Time and time again, saying other people are stupid. Which makes the smart people understand that the person saying it has an attitude problem.