Yserb, you simply have values outside of torah if you think that lack of education causes more harm than institutionalized sin and heresy(the act of comingling and the idea that it’s proper, respectively).
What MO does is robbing Jewish children of avodas Hashem and olam haba. What a lack of education supposedly does, according to critics, at its worst, is harm a child’s ability to get around in olam hazeh. But it’s demonstrably false, because chasidim have very strong communitiea and families. Do you live for olam hazeh? I think it sounds like you do.
As for rav Shapiro, he didn’t spend that much time talking about his illustrious father in law, rav yeruchan gorelick, teaching in YU. He wrote that rav gorelick was vehemently opposed to modern orthodoxy, sent good talmidim away from YU, and only remained there due to parnosa necessity. Originally rabbi yoshe ber had told rav gorelick that the only yeshiva that can make it in America was YU, to which rav gorelick would krechtz about later, when the exact opposite was proven, where YU is a tiny fraction of the yeshiva world.