I fully agree that the Venn diagram is not a circle.

But given that any slight, no matter how insignificant, no matter against which part of the Venn diagram it was directed, invariably gets labeled "antisemitic", I think people like me can be excused if we express ourselves with less exacting clarity, than the people in the Venn diagram demands.

If the people in the Venn diagram think the distinctions are very important, a good place to start is to use very distinct colors.