Track and Field is a joke of a sport.
If it was a serious sport, USATF would tell Mu that she is disqualified from competing in the Olympic Trials next year if she doesn't run the WC this year. If it was a serious sport, Nike would cancel Mu's contract and sue her for non-performance and contract fraud. If it was a serious sport, Bobby Kersee would be sanctioned for his destructive actions in the media, all bad publicity for the sport of track and field.
The worst thing that ever happened to track and field was professionalizing it. The athletes never became professionals, they still behave like amateurs but now expect to be paid like professionals. I'm no longer sad that athletes can't make a living doing track. It's a total joke.
I have more respect for Jarmila Kratochvilova than I will ever have for Athing Mu.