If it turns out that Poland would indeed honor the ICC warrant were Netanyahu to travel to the country -- rather than grant him diplomatic immunity as France has said it would do if the prime minister would travel there --  then Israel should not send anyone to the ceremony.

This would highlight the absurdity of the situation. 

Netanyahu said at the event in Jerusalem in 2020
1. Auschwitz and Jerusalem An abyss; and a peak;
2. Auschwitz, extermination; Jerusalem, revival;
3. Auschwitz, enslavement; Jerusalem, freedom;
4. Auschwitz, death; Jerusalem, life;

Auschwitz, he continued, “is also the ultimate symbol of Jewish powerlessness.
It is the culmination of what can happen when our people have no voice, no land, no shield.

“Today, we have a voice, we have a land, and we have a shield.

Today, our voice is heard in the White House and in the Kremlin, in the halls of the United Nations and the American Congress, in London, Paris, and Berlin, and in countless capitals around the world.”