I can personally vouch for two households of Jews who think this article is total junk.
Sure, you only asked two households. It's a shame the issue was framed as a Jewish issue, because there were points to be made on immigration, which if you read the thread were glossed over. Pre war immigration policy (not much objected to by American Jews at the time, to their disgrace) is probably the only legitimate connection, and I doubt 20% of self identified Jews would have a clue about that issue, far less if you accept the 2% of the population figure.