Simon Biles is amazing at gymnastics, let's get this straight. She didn't need to prove anything to anyone. I also do think it was best for her to step down
Regarding performance, mentality is key, especially in solo sports where the light is all on you. When I did shot put, if I put negative ideas and such into my head, it would ultimately lead to poorer results in my throws as such. Being in a proper mental state is essential into scoring well and if that is truly the reason she withdrawed, there is no issue. Mentality is key to the Olympic games and if Simon had consistently negative thoughts and was fighting demons that led to her performing at less than she should, she should resign and allow others to continue. I also could tell the sharp difference between her 2020 performance and 2016. It shows her deterioration (granted her deterioration is still the best in the world), if it impacts US performance, she should resign.
This will not be the end of Simon Biles. For god sake she is insane and so good that a move was named after heard, but other analysis like Charlie Kirk should really be quiet on the matter, especially with little sports knowledge or experience