(disclosure: I'm Polish)

This is not true.

The legal act that regulates it[0] says (only relevant parts)

""" Article 1: This act regulates

1) recording, collecting, developing, maintaining, making available and publishing documents of the state security authorities, obtained and collected from July 22, 1944 to July 31, 1990, as well as Third Reich and USSR security authorities, regarding:

a) crimes committed against persons of Polish nationality or Polish citizens of other nationalities in the period from November 8, 1917 to July 31, 1990: - Nazi crimes, - communist crimes, - crimes of Ukrainian nationalists and members of Ukrainian formations collaborating with the German Third Reich, - other crimes constituting crimes against peace, humanity or war crimes,

[...]

Article 55: Whoever publicly and contrary to facts denies the crimes referred to in Article 1, point 1, shall be subject to a fine or imprisonment for up to 3 years. The sentence shall be made public. """

(art and research is exempt from this law)

So it is illegal to deny Holocaust or to attribute the responsibility for it to Poland or the Polish nation or to say that the death camps linked to Holocaust were Polish or operated by Poland.

It is legal to suggest or just simply say (as it is documented by the Institute of National Remembrance - a Polish state research institute) that there were individual Polish citizens that collaborated with Nazis and took part in committing Nazi crimes.

[0] https://sip.lex.pl/akty-prawne/dzu-dziennik-ustaw/instytut-p...

user:	jmolinski
created:	April 14, 2022
karma:	11