From my life experiences.
A lot of the time a talented young athlete is coached by a person (coach1) who does not really know what they are doing but get results, sometimes that person is receiving advice from someone who does not want to take the reins so to speak.
Along comes coach2, who can talk the talk and simply ups the intensity which leads to improvements. After the peak is reached little happens other than the athlete believing they are not genetically gifted enough.
A lot of media coverage turns into very little, it doesn’t take long before people start asking what is happening and there will be more than one who will go out of their way to humiliate the athlete.
As a parent the driving force is to do the best for the offspring and bullshit is often the driving force behind a lot of successful trainers who seem to have the motto “if i can’t brand them then i would rather see then leave”.
Mate I wish you luck and the only advice I have is to continue to do what you think is the best for your offspring.