Oh God. I'm a halfie myself but this is ridiculous.
(1) The dwarves were a good race, for starters, so I don't find it particularly offensive. People love to make Scottish and German dwarves, probably because it fits the existing dwarven stereotypes; I was aware of the 'Jewish' origins of Tolkien's dwarves but it didn't seem to carry over to D&D, where other stereotypes like drinking and fighting (not typical Jewish stereotypes) were a bigger deal.
(2) I kind of thought D&D's gnomes (as of about 2e) might be a little Jewish, what with the bonus to INT, the big noses, and the love of money and jokes, but then again, they were good guys; I'd be much more upset about drow or orcs.
(3) Gygax swiped the golem and the phylactery from Judaism...just like he swiped the rakshasa from India, gold dragons from China, Tiamat from Babylonia, griffins from Iran and Egypt, and lots of other stuff. This was way before people were worried about cultural appropriation, mercifully.
(4) The author has ignored all the clerical spells clearly taken from the Bible...Sticks to Snakes, Lower Water, Part Water, Insect Plague come to mind. Gygax was a Christian and when writing the cleric class these would have been natural examples to come to mind.
What's going on, IMHO, is all the lefty social-justice Jews are realizing they don't have enough 'intersectionality' points and are going to get discriminated against with the other white people...not to mention saying you're oppressed gets you victim points and gets other lefties to defend you. Forget about inventing relativity, the atom bomb, the polio vaccine, and just about every major comic book character, you get points by being picked on these days.