All Chassidim of all types know about the cherem. Next misinformation?
MO as people define it here means very simply – putting Modern before Orthodox and misdefining modern to mean bending and sinking in observance to match the times. That was true 50 years ago. It isn’t true now among the leadership, except in YCT which is fringe. Probably the real YU definition is that Torah and secular knowledge are on equal footing, which in turn is a spin of Rav SR Hirsch ZT”L’s hashkofoh.
You can be fully integrated into the modern world (usually for parnosso reasons) and wear a Samet hat, payess and a reckel down to your ankles, and you can be an ignoramus about current affairs and technology and not know how to use the Internet and wear a kippa sruga that you take off when you walk into a treyf restaurant to have (whatever your rov 30 years ago told you you could have).
By the way, this is my last serious post here until Chol Hamoed Pesach. Of course I will be back in Adar for humor posts, as well as at any other time if current or community events warrant a few satirical or joke posts.
I have too many responsibilities in the modern world and in the (most charedi segment of my) community to be really involved here.