"Probably a major chunk," huh?
Quix, from roughly 1962 to 1985, "The Institution" couldn't "heavily well train" itself out of a wet paper bag. I was born in 1960. My folks pulled me out of religious ed when I was in 5th grade because they could see (correctly) that it was a complete waste of time. Five classes worth of confirmation prep in high school didn't amount to much, either.
Catholics who are "heavily well trained" today either (a) were "trained" outside those years; or (b) trained themselves.
Obviously, a Catholic who doesn't know his faith is going to be easy pickings for you guys. How can he refute your attacks on his faith if he doesn't even know his faith? Could a conservative refute liberal attacks on the Constitution without knowing the Constitution? Of course not.
But what do I know? I'm only a Romanist who doesn't know the Bible, and if I did know the Bible, I wouldn't be a Romanist any more. (Now that's funny ... LOL)
I don’t recall any forceful correspondents hereon . . . who’d left the Vatican fold
who weren’t VERY WELL TRAINED AND EDUCATED in what the whole RC experience and dogma is all about . . . for many long years.
This has been true in my face to face life, as well.
Those who aren’t that well trained tend to keep quiet.
The allegation to the contrary has ALWAYS RANG EXCEEDINGLY HOLLOW AND AS A VERY VAIN, SHALLOW RATIONALIZATION for those unwilling and maybe unable to look squarely in their own mirrors and at their own biases and at the flaws of their cherished INSTITUTIONAL IDOL(s).