FIRST off, if you have that much to say, can you please break it up into paragraphs ? Some of us find it very hard to read that much text on a computer screen, especially when it's as dense as the above post is.
It will help your point to be read, if you will break up and separate the thoughts, by liberal use of the Enter key.
As to your actual point, had you been following the thread, YES, there most certainly HAVE been charges of anti-semitism thrown around, WHICH, btw, is neither a minor charge, nor one that I am prone to use lightly. BUT these accusations have NOTHING TO DO with what you're talking about.
Unfortunately, the things you mention are so common that though we may disagree, we consider them to be merely one facet of Christian belief. Of course, these are the Christians furthest from where I am, as a Messianic, with brethren just over the border as "Hebrew Roots Christians."
But it really doesn't matter how many times you might point out to some people that Messiah WAS killed by crucifiction (Roman method of execution) not stoning (Israelite method of execution). There have always, and will always be those motivated by their own personal biases, rather than a true desire to serve G-d, and such people will unfortunately always find homes in the fringes of organized religion.
But since you DID ask, before proceeding to explain (again) why Cup of Ruin is an anti-semite, I will go ahead and briefly explain why these more minors issues, which we accept as the dark side of Chrsitiandom, ARE nonetheless, anti-semitic (albeit mildly so).
The story of Yeshua is a Jewish story of a Jewish man, and His Jewish friends, surrounded by Jewish followers, in a Jewish land. From top to bottom, and inside out, the entire story is thoroughly Jewish.
So while SOME people may read an awful lot into the fact that SOME Jews hated Him, and wanted to see Him killed, the freer thinking people recognize that the people supporting Him were JUST as Jewish as those opposing Him. The 12 apostles? Jewish. The 5000 He fed? Jewish. The hundreds He healed? Jewish.
One simply expects to find the majority of the main characters all the way around WOULD be Jewish, given the context and locale of the story. It doesn't mean "The Jews killed Jesus" or that "The Jews hated Him" or "The Jews rejected Him" far from it! If we took all His Jewish supporters out of the stories, and out of history, who WOULD have carried His message to the world?! NO ONE! Because He repeatedly SENT His apostles out TO the people of Israel!
So there you have it. This "Da J00s killed Jesus" stuff is total crap, of course. But it is prevalent enough in Christian culture, we try not to simply "write off" those that believe them, and instead endeavor to educate them, as I just have, and show them that the worldview which leads to these biases are definitively incomplete.
On the other hand, there are much bolder and more brazen forms of anti-semitism, such as that displayed by Cup of Ruin. He has repeatedly claimed that just calling someone a Jew is, and was, an insult. He claims Yeshua wasn't really Jewish, despite the clear scriptural indicators that not only WAS He Jewish, but that He HAD to be Jewish, in order to fulfill the prophecies and BE the Messiah.
He further claims that ALL those claiming to be Jewish today, and presumably all of Israel as well, since Right of Return IS automatically granted to those who can prove that they are Jewish, are really imposters... but more than that, not ONLY imposters, but actually agents of the Accuser, the Adversary.
He does not read as we do, that the first couple of chapters of Revelations are written as letters to the fledgling churches, meant to encourage them. He doesn't compare this letter to Smyrna that he loves to quote, against the letter to, say, the Ephesians, and conclude that these enemies are (or were) COMMON enemies, and actually are those who dwell among US believers in Messiah, but wants to write off an entire race, and religion, and quite possibly an entire nation-state as agents of evil.
But see, we don't really know. He won't disclose his full position. He won't go into details about these beliefs, and he refuses to even mention what sort of "final solution" should be employed to deal with his alleged "Jewish problem." And while it's entirely possible that some may give the benefit of the doubt, when someone intentionally keeps their mouth shut this way, I do not. I fear the worst, because I know this theology all too well. I know its origins, and I know its ends.
This IS the height of anti-semitism. It is this very same sentiment that swept across Europe in the 40s and led to the wholesale massacre of millions of innocent people, not JUST Jews, but also Catholics, communists, unionists, gays....
You see, when it comes to bigotry, Jews are sort of the "canary in the mine." History shows us time and time again, if you want to know how tolerant a society is, of cultural differences, you need look no further than how they treat the Jews. Any group that hates ANY group, also hates the Jews. White supremacists, black supremacists, nazis, communists like Stalin, Catholics, Spaniards, Dutch... It's a theme echoed on every page of human history.
Whoever makes themselves the enemies of the Jews, or of Israel, makes themselves the enemies of her G-d, and His people (Gen 12:2-3).