Not sure how you got this from what I wrote. Some student essays yield insights about the student that makes the student a lot more interesting to the college, and others are boring or rife with banal generalities. Most of the memorable (in a good way) essays I've read had nothing to do with trauma or amazing discoveries.
Most students admitted to highly selective colleges come from affluent families, are legacies, or are recruited athletes. In the Ivy League, around 15% of students are athletic admissions, though, of course, some of those are also highly academically talented students. Some are really, really not fabulous students...but they are nationally ranked athletes. We have one at an Ivy League college with a 23 ACT score and lots of B and C grades, but she was also nationally ranked in the top 5 in her primary event. At schools like Amherst, athletes are more than a quarter of the student population--and for most sports, participating in expensive traveling club teams or expensive specialized coaching at IMG or similar places is how you get noticed.
Getting into college isn't a challenge. That is a myth. The vast majority of colleges in the US accept a high percentage of students. It is a different story when we're talking about the 50 most selective colleges in the country. When you have many students with very high grades and test scores, essays and recommendations are key differentiators. One of the public high schools near me typically has close to 30 students who qualify for National Merit status based on PSAT/SAT scores. Most of those students also have incredibly high GPAs, with loads of International Baccalaureate and AP classes and high test scores. Of those 30 students, we'll see about ten admitted to Ivy League, Stanford, Duke, MIT, CalTech, Williams, Pomona, or other super-selective colleges. The other 20, also outstanding students, don't gain those admissions, as we can see from the Naviance scattergrams. The biggest challenge is that too many students and parents believe they have failed if students don't get an offer to attend one of the "highly rejective" colleges. (Thanks to Akil Bello for originating that most helpful phrase.)
One of my goals is to help students and their parents move away from the myopic focus on this tiny number of colleges and explore the amazing opportunities at colleges that are more accessible and often more affordable.