No. I think the OP may speak the truth.
Think about the time frame: the eighties, the same time my son was going through Confirmation class. Today he is a CINO (Catholic in name only), married outside the Church, bitter about his experiences. My daughter, eight years older, suffered also from the insecurity and confusion exhibited by CCD trainers and teachers in the glow of the famed “spirit of Vatican II”. Today she is divorced, remarried outside the Church. It is my estimation that “cradle Catholic” children of that era are seriously deficient in dogma and Church history, primarily, but also in learning about the Laws of the Church.
I would defer to others who experienced “Catholic education” in the 80’s. We did not have a Catholic school in our area, so my two children went though CCD. It was not well done; it was confused, both about what to teach and how to teach it. The result seemed to be a mishmash, similar to the confusion that reigned in public schools during the same period. Lots of fluff, lots of experimentation, not too firm on the basic doctrines of the Church.
My own Catholic schooling, in the forties and fifties, was wonderful, compliments of the School Sisters of Notre Dame (SSND) and the Franciscans. My children, on the other hand, suffered from the tragic experimentation and flawed enthusiasm of CCD teaching in those years, and they have never really recovered.
As the OP pointed out, much of the blame can be assessed to their parents, like me, who left the Catholic training to untrained, unsupervised rank amateurs, and then insisted on these kids going to CCD, and paying attention to teachers who did not have a proper education in the Catholic Faith. We are still paying the tragic price for that “one or two missing generations” who now are teaching CCD. But now, we have at least one, maybe two generations of those who have been received into the Church through RCIA, who can counter-balance the “untrained” cradle Catholics.
I don’t want to tar all who lived through those times with the same brush. I am sure there are well-trained cradle Catholics who emerged from that tumultuous time. But, yes, cut these folk some slack so they can re-learn what they were supposed to be taught. Especially, be patient with their questions. We owe them at least that much in true Charity.
Please pray for my son and daughter.