Yes, I will concede as well that suspending the athletes from competition is unfair.
I feel like the outline for dealing with abuse I laid out a page or two before could be applied well here. There should be a through investigation into the claims made by the athletes, during which the coach in question should be suspended for the team for the time being, and the gymnasts involved offered counseling. The Dutch NF should have meeting with all coaches to discuss what type of coaching practices are acceptable/ethical (even though it seems like the other coaches are fine). The Dutch NF should have a meeting with all the gymnasts to discuss their concerns, thoughts, questions on the issue at hand, and on coaching in general. Once the investigation is finished, everyone should be made aware of it’s findings. If it is found that the coach was abusive towards any athletes, then proper punishment should be given and legal action taken if necessary. If the investigation doesn’t find any wrongdoing, then the coach should be reinstated.