A lot of people, especially those on the far right, have painted anyone critical of the Israeli government 's actions in Gaza as anti-semites. This is clearly absurd if you take a second to think about it. Making note that Jewish people and Israelis are also critical of these actions is pointing out the absurdity of the statements of the far right.
I think the same reason that whenever someone from the Trump administration is jailed on statutory rape charges or whatever the replies are "only the best people."