Gee, but you sure have ISSUES!
For the first time in the history of this country, the fathers get some rights, and you have a problem with it.
Why don't you read the Children's Act PROPERLY?
The Children's Act is about the RIGHTS OF THE CHILDREN!
Children have the right to free and unrestricted access to BOTH parents.
What YOU think of your ex has no bearing on the matter - with you being an ex-wife it's a given that you still have abandonment and anger issues with your ex that you need to resolve - but why should your children have to wait for YOU to grow up and become a mature adult, able to deal with personal setbacks without becoming bitchy and vindictive, before they are allowed to have the contact with their father that they not only want, but are entitled to by law?
It's amazing that you believe you can justify your pettiness, bitchiness, and downright vindictiveness by trying to hide it under a cloak of 'concern' for your children - no matter what, NOTHING can justify your proposal of self-righteous withholding of contact between a child and their father, because the root cause of your attitude is not philanthropic concern for your children, but a selfish desire to punish your ex for whatever happened between you, be it real OR imagined.
GROW UP!