That was my take from the story. I know plenty of guys who went to schools without L"C and were angry that they never had a background in L"C or were taught that it was evil and a contradiction to what they should be doing and are now OTD, R"L.
You are mixing up two things. In the story I brought, the lack of L"C was definitely not a trigger.
I have a hunch that
@AsherO does know who this guy is, and I think he would agree with me. The resentment, OTD, etc. are definitely not for lack of L"C, and I say that with 100% certainty. People might cite (or sight, as many who got a high-school diploma might spell it
) that as a reason, but it's just an excuse - see the current conversation in the Kids Texting on Shabbos thread. I am surprised that an MBA would give credence to a claim that correlation proves causation.
If only they were truly taught that there is good to be found in all klipas noga, perhaps they would still be frum?
Everything has its right time and place. When your kids get to a certain maturity, you will talk to them about some topics, that you wouldn't and shouldn't talk to them about at this time, in order to protect them and make sure they learn certain things FROM YOU (or from a source you trust) rather than find things out or learn them in a way that you have no control over. The good which exists in Klipas Nogah is there in order to be nisbarrer, not in order to stay there or be used in a way that isn't mevarrer. To indiscriminately subject teenagers to a L"C curriculum, whether they need it or not, doesn't do good for them. Those are formative years, and chinuch needs to be done with a mindfulness of that, and an emphasis on what really matters.
All of the above notwithstanding, I don't think that the term Chinuch Al Taharas Hakoidesh means no English or Math! I absolutely do think that kids should have proper language skills (and if they have an appreciation for that in one language, that will translate automatically to other languages), and basic math skills (which is definitely a part of Torah - my SIL actually created a Torah curriculum through sixth grade that gives math skills, to the extent that upon completion a child can actually create his own Jewish calendar).