The translator may have made some mistakes, the original quote might actually actually go: “we are going to get you”

Yes it does, the translation actually has several mistakes. Here is a better one (from deepl.com/translator):

The short scene takes place in a Bundestag canteen. Former Environment Minister Barbara Hendricks from the SPD describes it at the lectern. A member of staff from the AfD parliamentary group noticed “that someone else was ordering a vegetarian dish”, reports Hendricks. In response, the AfD employee said: “We'll get you too, you grain-eaters.”