I have spoken with him in learning quite a few times. He is a talmid chacham and someone to be respected on that basis.
Others who have learned with him know that he knows shas cold.
Tosfos to Sanhedrin 59a (DH ???? ????? ??????? ???
says that even though a yisroel is patur for killing a fetus, he is nevertheless not permitted to do so.
The Koach Shor says that by Bnei Noach, there is no heter to abort, even to save the life of a mother. Rambam, he says, does not allow for this, and he notes that the Minchas Chinuch adds that a Ben Noach may not violate any of the sheva mitzvos to save a life.
There are several other examples of instances where it seems Noachide law is stricter than Sinaitic law- yefes toar, stricter standards for theft (albeit due to different social standards, notes Rashi), etc.
The point is that we do not hold like the Gemara for halacha le maaseh. The poskim more or less do hold that there is a stricter standard involved for Noachides than Jews on this matter, and this has obvious poltiical ramifications for Jews voting in a majority non-Jewish society. It is not as intuitive as a claim as one would think.
Pointing out the faults of a politician who is Jewish is not loshon hara. It is making the obvious known.