you mean chalav stam? Where is any of the above against halacha without a good basis to be based on?
1. You are mixing up "wrong" actions with the study of Torah that these people do. Just because they act in a way that you (as opposed to גדולי ישראל אמתיים, צדיקי עליון ) feel is against halacha, does not mean that something they study is suddenly not part of Torah.
2. On regards to it being "wrong", see parentheses above. Much stronger basis than cholov akum and shaving. No real people in pre-war Europe did that, ch"v