Is there a way to deactivate the Ridiculously Bloody Blood Pack?
Perhaps a file that could be deleted or edited?

I do not use Galaxy. (In case there is some setting there)

Any help would be appreciated.

Galaxy unrelated here anyway.

Im know only one way. Apply steam version based crack. probably two cracks. one should replace exe file, another one come with steamclient dll and configuration ini file.
But what the point of having clear version if goes in such "dirt" way? Me personally have no issues with it, i more into accepting games as it is. And DoW always was about blood fontains and gibs, hot guts thrown out of body. From very firs game (btw remains corpses and their inner and external parts was erased after save-load, so im even prefer goes mission in one run, saving only at the end; also music dissappear in some DoW1 games after save reload).

Ridiculous is that DoW1 games rated M17+(16+) and DoW2+ are 12+ by default with 16+ only for that DLC.

Ridiculous#2 actually none of them should be M17+, comparing to sex scenes in GTA and Cyperpunk 2077 that also just M17+.

Maybe there isna way by some files alteration. There is obvious per dlc named files in Spacemarines 1 by Relic. But i dont see such obvious dlc relted files for Retribution.

HEX editing exe are basically the same as install the crack. Literally same. If such way possible. So even if there is a point disable Blood Pack DLC, i dont see point do it in any other way than instal the crack. With crack you have chance that only dll +ini would be enough. That mean you wont alter the single file of game, keep it clear as possible. That literally better than hex editing any file.