I just HATE when that happens!!
John 3:18
So do I, especially when the insensitive religionist scoffers also ignore the basic etiquette of communication.
But the "in-your-face" spiritual waterboarding of children is most definitely not the CEF style, as the previous mocker you quoted falsely maintains.
The CEF mode is to couch the gospel in such simple language and illustrations, within a child's vocabulary, and tenderly offered, that the Biblical truths cannot be denied by child or adult.
Regarding your Scripture quotation (and the translation of krino in the perfect tense is excellent), its following context amplifies the issue being discussed:
"And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil" (Jn 3:19 AV).
It is precisely those who are under condemnation and who love the darkness--who don't wish their children's spirits to be illuminated nor their evil deeds exposed--that object to the CEF approach, even though it is done with considerate methodology subject to obtaining parental consent.
(BTW, font-blasting is not exactly a polite way to present one's theology, as it belongs in the same category as other "in-your-face" tactics.)