If the parents aren't serious about their faith, the children are already "lost." One hour a week of CCD can't overcome the parents' unwillingness to live their faith.
SD
True for some, no doubt. But we are planting seeds of faith. After 8 years, and also parenting, I can see that the idea does indeed stay firm in the most unlikely of kids. And some have grandparents, aunts/uncles, babysitters, who share faith with them and with whom they attend Mass. We simply can't stop trying because parents are unwilling to live the faith themselves. Each of us has our own experience with faith with it's own peaks and valleys, we have to take the opportunity to share faith with the child simply because the parent brought the child in the first place. Occasionally we even see a parent return to faith because of their child's experience.
It all depends on your objective. If your objective is to make sure that all parishioners of a catholic church are completely following the rules, then this is a good method. If your objective is to spread the word of God, then this method is counter productive. God works in many ways. It is not unusual for those who have lost their way, to eventually find their way back to God. The priest in this case seems to be slamming the door in their face.
Thank God, Jesus doesn't agree with you and offers salvation to all, tax-collectors, prostitutes, and many others that would be judged as already 'lost' ... How tragic that the 'Pharisees' running this particular parish have now grouped the 'children of the not regularily attending' in the same 'lost' category.