I think her age is more of a factor than anything. She's 24, which seems young, but she's ancient for gymnastics. The extra year delay for the Olympics kinda screwed her. And she was too young for the Olympics in 2012 because they changed the age limit from 14 to 16. She really wanted to get TWO Olympics in like Shannon Miller, but Miller was allowed to compete at age 15 and then again at 19. Biles had to wait until she was 19 and then when she was 24. That's too long in a sport like that which is so youth-centered.
I don't even want to touch the PED angle because there's so many drugs that are A LOT more beneficial to athletes in that sport than Ritalin and they're given out systemically in countries like Russia and China. Biles is the most decorated female gymnast ever, in front of a bunch of Eastern Bloc bitches who I highly doubt were clean. Give her credit.
https://en.wikipedia.org/wiki/List_of_top_female_medalists_at_major_artistic_gymnastics_events