It's perfectly possible to criticize the Israeli government without being an antisemite. I do it all the time. This statement was not that by a mile.
The statement is antisemitic. The statement says that Israel is entirely to blame for the murder of Israeli civilians. It doesn't express any sympathy for the dead, or the kidnapped, or the raped, or the burned, or the beheaded. It does not identify Hamas as having anything to do with what happened. That sort of rejection of reality is not an accident. It's antisemitism.