I rarely comment. However, missing from these discussions is the primary source of contention between the MO world (and similar) and the chareidi world- and people should be aware of what it is.
The main reason why there is pushback from the chareidi world is because the MO (and many similar movements that started over the years) always put something other than torah (and Mesorah) either, equal to, or higher than the the torah itself (such as secular education for the sake of “knowledge” and “being educated”). It comes out in the way they speak and from their actions. If you don’t know what I am referring to, it is because you are not talking to the leaders of these groups.
An argument these groups make is that many of the chareidi Gedolim (such as RSRH) themselves have even stated at times these things are benefit and worthwhile (like secular education for the sake of “knowledge and being educated”), and in fact, they are correct. Many Chareidi Gedolim do feel that way.
However. The charadei Gedolim vehemently disagree with MO approach and will continue to do so because under no circumstance may one put on a pedestal something other than Torah- and these groups are.
The proof that it is on a pedestal is the passion these groups (or at least the leaders) come with promoting their agenda. We could have a debate about the importance of secular education, but the passion and insistence for it is misguided and an indication of ulterior motives (many times deep down) that the chareidi Gedolim keep calling out, and unfortunately they have been proven right time and again. The next generation picks up the ulterior motive and throws away even the Torah.
A few things:
1. Secular education was used as an example because it’s a common theme for these groups.
2. keep in mind there is a MO movement heading towards the right, and as another poster mentioned, the lines are increasingly becoming blurred (in a good way for some).
3. The average person within these groups may not be aware of the bigger picture and they are generally a tenok shenishba (but watch out for those with a strange passion you can’t seem to be able to explain).
This “conversation” and back and forth has been going on for years, and like it or not, it will continue due the passion and importance of the pushback.