Polish people were exterminated on a daily basis by German nazis. Over 5 million Poles were brutally killed. It is hard to miss German attack and occupation of Poland aim was also to depopulate it from polish people.
Collaborators were punished because they were traitors and everyone seen and sees them like such.
Below is a link to a Wikipedia where you can learn more:
> Especially in the early weeks of the German offensive, many thousands of Jews were murdered by members of local communities in the western parts of the previously Soviet zone, such as the Baltic countries, eastern Poland, and western Ukraine.
I am absolutely not trying to paint a complex situation in black and white. The article you linked to also points out how many non-jewish poles were killed, how many non-jewish poles helped jewish poles at great risk to themselves, etc. but the idea that you can “other” collaborator poles out of being poles is denying the reality.
Collaborators were punished because they were traitors and everyone seen and sees them like such.
Below is a link to a Wikipedia where you can learn more:
https://en.m.wikipedia.org/wiki/History_of_Poland_(1939%E2%8...
I hope you will understand how offensive and false your comment is.