Frankly, any apology should come primarily from the Polish government,
There is nothing to apologize for.
That presumption you try to push forward is simply a ridiculous nonsense. As I have illustrated by saying that in that case Israel should apologize to Poles. I see you still don't get it.
One aspect:
If an American Jew would have been murdered by a WASP, would you expect an apology to be forwarded by the POTUS to all Jews worldwide or to Israel? What if a murderer would have been committed by an African American or what have you?
Why a criminal act committed by one citizen against another citizen should be hold to a different standard if a one them belonged to a certain ethnicity and other to another? Is not only a very racist attitude but is has no place in the modern civilized world. Its backwoods.
Do you get it now?
It is one thing if some atrocities are committed by a state and its functionaries. We could agree that some kind of acknowledgment that a certain policy of a state has been wrong wouldn't hurt.
However talking about responsibility of a state for acts of criminal individuals and especially an idea to divide and judge those individuals according not only to their deeds but also to their ethnicity is just a dumb idea.
acts against gentile Polish patriots were doubtless not committed out of unbridled malice, but rather as acts of retaliation for anti-Semitic provocation
No, they committed that all those atrocities as an act of subbing Poland by the Soviets oppressor. Amongst those who volunteered to be a genocidal murdering criminals and traitors there were aplenty of people of Jewish extraction. I was talking about them.
I'm not talking about some acts of savage ravage as when some Jews killed not only aa person responsible for some misdeeds towards their family but also slaughtered his all family including an infant in the cradle. Nor I'm talking about atrocities committed by some armed group of Jews on a local population just because they could and had an upper hand.
If you think that Jews were all innocent angels that reacted only to provocation you're deluding yourself. Those were not a middle class college professor, shop owners or lawyers but people from all walks of life, including criminals, the poor, illiterate and people of all social strata...not to forget dedicated communists.