Just another case of Polonophobic attack.
I don't think that in this case you're right. It is yet another case of so called liberals/progressives or whatever you choose to call this neo-Marxist filth trying to attack anything that doesn't conform to their ideology.
It is not an accident he is an American Jew as most of them are liberals/progressives. It is not a surprise he is a professor on American university, where most of the professors there are neo-Marxist to some extend at least.
So, a fact that is a columnist in the New York Times Rag is just a cheery on the cake.
I wouldn't expect nothing else from the person like that.
So no, it is not Jewish anti-Polish slander - plenty of those out there- but an attack on Poland from the ideological progressive perspective by some red commie git not unlike Dough.
You should learn to differentiate rather than go into ha those Jews again mode. Lots of reasonable, not anti-Polish Jews out there, at least there are some. I suspect many are just being triggered just like you by some crap said there or here and blamed on Poles or the Jews.