a possible angle to all this...
Simone Biles has shown that she's GOAT material, especially when it comes to winning the overall gymnast title and quite possibly more than one individual medal...should she go 'all out' to help an already talented group with the team medal and risk an injury that could cost her...and the USA...additional medals and national prestige?
Unlike swimming or track and field, there is a lot of danger in gymnastics...very intense and aggressive exercises that shock and stress the body, with little margin for error. I'm sure that Simone has seen enough of these in her career already...plus, this will be her last Olympics...no chance for a comeback performance in four years...this is it. So, it's plausible that the best approach for her and the USA team is for her to be at her physical best when the individual events take place...btw, even her former teammate, Aly Raisman, supports her.
Just thought I'd throw that in...we'll see what happens.