"The largely dominant meritocratic paradigm of highly competitive Western cultures is rooted on the belief that success is due mainly, if not exclusively, to personal qualities such as talent, intelligence, skills, smartness, efforts, willfulness, hard work or risk taking. Sometimes, we are willing to admit that a certain degree of luck could also play a role in achieving significant material success. But, as a matte…
I understand what you are saying to a degree, however I've had more success than many colleagues due to me spending time every day to improve myself (usually technically). What you are saying is like saying some people are thin due to genetics, which can be true, but also many people are thin because they workout.
Then there always is the argument that you have access to a gym and markets with healthy food. You can always under/over exaggerate personal responsibilities.
Just like Brett Kavanaugh worked his ass off to get in Yale, which he probably did, is this negated by his family's connections? Difficult.