This I haven't heard the only ones I have hear him attack are pseudo orthodox/open orthodox/liberal orthodox like Weiss,Riskin,Angel,Dweck & Riskin. I also never heard him promote neo nazi propaganda
There's a youtube video of him asserting nazi lies which blame Jews for Germany's problems and as orchestrating all the bad things happening in preWW2 germany. He does this in an attempt to do "kiruv" by asserting how bad reform Jews are. Historical accuracy of course doesn't play a role at all in this discussion because he is completely ignorant of the history and only cares about promoting haredi Judaism at the cost of all else. He adopts some of Hitler's lies, that Jews destroyed the German economy (and also that communism was a Jewish conspiracy and that Jews destroyed Russia), and that all the cultural filth Hitler outlawed was run by Jewish people. Of course this absolves German non-Jews of all the sick things they were doing as well, and it has nothing to do with what created germany's economic problems. Certainly none of it justifies turning "the Jewish race" into the enemies of Germany and attempting to exterminate them, but according to those who use this "confession" it is portrayed that way, and Ron does nothing to dispel that notion.
Neonazis now spread his video as propaganda "Even jewish rabbi admits that the Jews were destroying germany and deserved holocaust"
Here is a neonazi islamic terrorist who posts the video with annotations as part of his propaganda efforts
https://www.facebook.com/100041787433206/videos/307451677324411/Ron made a response video to the criticism saying 'B'H, even the antisemites are learning Torah from me'
What a dummy.
Now, you may like some of his attacks on the illegitimate "Open Orthodox" pseudo rabbis, but he ALSO attacks Modern Orthodox and rightwing rabbis, some of them very legitimate rabbis, and he has been caught lying about several of them in his campaign of attacks.
The reason for his attack on a certain list of rabbis is that they condemned his colleague Rabbi Mizrahi for his false claims about the holocaust and the way he minimized it. That apparently made this list of rabbis "enemies" of this clique of 3 kiruv stooges.