Utilitarian Approach To Morality Used By Atheists
If I have understood you correctly, then what you’re referring to is ‘Utilitarian Approach’ in deciding good and evil based on apparent utility a particular action entails at an individual level. You may find the following critique by Ghamidi Sahab highly insightful in this regard. Please refer to the video below from 24:49 to 29:06 https://youtu.be/SYS3UNRMdIU?t=1489