I don’t think it’s Mills they needed to worry about but Mills has his own crew to look after and wouldn’t want to interfere on behalf of people he isn’t directly involved with.
Remember, every country has a set number of credentials. For every coach of an athlete they leave out (Franno, etc) there is space for a JAAA crony with an agenda to attach their name to athletes they didn’t produce and without the knowledge to leave well enough alone.