I have been on Blade of Agony team for about 4 years (!), and part of my coming to the team originally was to contribute my Sonder art to this particular level, that was planned already back then (and started actual mapping in 2018)
So you couldn't be farther from the truth.
It seems you see it all upside down. Actually the downside of "my" Sonder was - people expecting it to be accurate recreation of the 1944 revolt, and that particular camp in general.
This mod has the ADVANTAGE to be linked directly to fictional Wolf3D universe (like my safe Sonder remake), with all its oddities and lore (zombies, ghosts etc), and so noone will expect it to be historical/accurate depiction of the Holocaust.
It's also placed in fictional camp, and there is no direct jew mentioning there.