While it is not antisemitic to believe the statement "Jews are more faithful to Israel than to the country of their birth", that is of course a statement that an antisemite would be likely to agree with.

The same is true of criticisms of Israel's behaviour, and of the way that the Palestinians were dealt with at the time of Israel's establishment and since. Such criticisms are not an indication of antisemitism but antisemites can be expected to have these views.

I am sure there are people who genuinely get confused about this. However basic logic sorts out the false syllogism involved.

All antisemites believe A
This person believes A
Therefore this person is an antisemite.

Equivalent to:

All monkeys have eyes
John has eyes
Therefore John is a monkey.