I'm not a fan of the JC these days but honestly dismissing all critique as "Zionist propaganda" is equally as tired as calling everything critical of Israel antisemitic.
That picture of "Jews" is an antisemitic caricature. Jews don't wear a tallit gadol outside of services, and 1st century Jews in Roman Palestine didn't look like modern day Hasidic Ashkenazim.
Catholic antisemitism runs deep, and in a country like Ireland with very few Jews, people don't always know how to recognise it.