Yes, as others have touched on, her routines are simply MUCH harder than anyone else's, and the way that elite gymnastics competition is scored has changed significantly. More on the change in the code of points below for those who are interested. However, the other thing about Simone that people must realize is that not only are Simone's tricks harder than any other woman, she is actually doing skills that only a few men in the world have ever been able to perform. For example, for the triple-double that she does on floor, the New York Times claims that only two men have ever performed it in competition (I could not independently confirm). Her new vault, the Yurchenko double-pike, has also only been performed by a couple of men in history. For a track and field comparison, it is almost as if you had a woman out there running a sub 9.7 in the 100m. It's a feat that only a couple men at the highest level of the sport have ever achieved, and there's a woman out there doing it. There are NCAA Division 1 male gymnasts who don't like to tumble in the same gym as her because it's embarrassing for them that a woman is performing tumbling that they can't do.
Before the early 2000s, the scores were out of a maximum of 10.0 Depending on how hard the routine was, some gymnasts would start with a maximum value of 10.0, while others might start with a 9.5. However, you rarely saw anyone in the Olympics with a start value much below a 9.5, so the spread was not that wide. The problem with that system was when a gymnast pioneered a new skill that was harder than what everyone else was doing, now everyone's routine had to be re-calibrated for difficulty level. In other words, the definition of a routine hard enough to be out of 10.0 kept changing. And, because the spread was not that wide, it de-incentivized gymnasts from adding a lot more difficulty to their routines. In 2006 they changed it so that the execution score is still a 10.0, but there is also a D-score, and in theory that score can keep going up as the difficulty increases (though they actually re-calibrate the D-scores periodically, every few years). The reason Simone scores so high is that her D-scores are insanely high. In the 2019 World Championships, she started with a combined D-score on all four events of 25.0. The silver and bronze medal winners had D-scores of 22.6 and 22.5, respectively. So, Simone is starting out with a 2.5 point advantage over the competition before it even starts. That's why she can make mistakes and still win. Each fall is one full point. So she could fall twice and still win because of her 2.5-point head-start. I hope that clarifies the scoring a bit. (Btw, NCAA scoring is very different from elite competition, so you really can't compare those routines to the Olympic athletes).