So let me understand. Br. Nathanael is accused of anti-Semitism (let us grant that one could take the part for the whole, i.e., call him anti-Jew even if he is not anti-Arab, both Jews and Arabs being Semites), on the basis of a statement that he was freaked out as a child to see many occult symbols prominently displayed at a Jewish center, together with some bad smell of death (as he perceived it). Perceiving Judaism to be a religion of death, this man turned to the true religion of Life, the Christian Faith.
So would there be the same outrage, if he had substituted Islam for Judaism? If he said, "I went into the mosque, and I saw occult symbol after occult symbol prominently displayed, and there was a strange pall of death and a musty smell which made me think Islam is a religion of death. So I turned to Jesus Christ and I embraced faith in Him." Would we, in equal measure, call him an anti-Semite for saying THAT?
And, on the basis of such a statement about a MOSQUE, would people be calling him hateful, or dangerous, or criminal, or despicable? This is an important question!