One of the biggest flaws in the thinking of the Modern Orthodox world is that they tend to view all Chareidim as being a monolith, having collective responsibility for the failings of individuals...
One of the biggest flaws in the thinking of the Modern Orthodox world is that, having adapted modern culture and values, they have difficulty dealing with dogmatic, absolute, hard-and-fast rules, which Judaism abounds with. It's much more "with it" to talk about touchy-feely moral relativism and call it Mitzvos Bein Adam L’Chaveiro (BALC), Tikkun Olam, and other trope. Not that they don't technically observe most of those rules, but they get much more excited about Tikkun Olam in Africa or serving in the IDF than they do about the mitzvah of Etrog for example...