Regardless of the wording of the headline, the quote seemed (to me) to be an attempt at an explanation, not an accusation. He said "And I think any Jewish people that vote for a Democrat, I think it shows either a total lack of knowledge or great disloyalty." So, "he thinks" (let's skip the obvious jabs on that one) that a particular behavior, that is, voting for a democrat -- not being one or embracing ideas that are representative of the dem party, but voting, considering the current crop of dem candidates -- can only be explained by either ignorance or a lack of loyalty (though to what, I'm not sur; he might be claiming that it shows a disloyalty to Israel, considering the sentence directly before it).
The problem is (well, one of them is) that we are used to politicians who speak carefully and measure their words, so we can parse them and judge each syllable as meaningful (or, at least, we can hold them to that standard and see when they mess up). But Pres. Trump lacks that filter and diplomatic sensibility so we are trying to judge his shoot-from-the-hip statements in the same way that we would take apart a practiced and calculated statement.