“they used such force in Europe when the local government didn’t intervene in Jewish communal affairs.’
Totally off . The ones they used it against were frum Jews that were part of the community. Here its the OTHER way around, we are dealing with people who LEFT the fold and we are trying to do whatever possible for them to return. BD has no authority over them in any whatsoever matter. The issue in concern is only regarding the people who do abide and are part of the community if THEY can have any connections.
The ones that left are basically not even interested in you and are part of (or on the way) the secular society.
Completely and utterly wrong. Beis Din has full and complete authority over every Jew. Even the ones that declare themselves no longer frum.