Probably not propaganda.
But debasement and demoralization of the civilian population of a country (or in Gaza, a not-coountry) you view as your mortal enemy by forcing pornographic materials on them is a long-term-war tactic engaged in by many sovereign states, definitely by the Soviet Union over the years, seemingly also by the U.S.A., and likely also by Israel in the case of the Gazan “Palestinians”.
It’s used by the same ethnicity in war.
The same ethnicity that creates porn in America.
Muslim societies are awash with porn. True long before the current conflict.