Why do you think it's not a word? It seems to be in multiple major dictionaries, including Merriam-Webster. Peak print usage seems to have been immediately after WWII:
It serves a niche function. Its not quite synonymous with 'indoctrinated'. People can be propagandized but not indoctrinated, since 'propagandized' only speaks to the attempt, and does not say whether the imparting of a stance is successful.
Why do you think it's not a word? It seems to be in multiple major dictionaries, including Merriam-Webster. Peak print usage seems to have been immediately after WWII:
https://books.google.com/ngrams/graph?year_start=1800&year_end=2019&corpus=26&smoothing=7&case_insensitive=on&content=propagandized
idk it just sounds weird. You don't see it in other tenses often.
It serves a niche function. Its not quite synonymous with 'indoctrinated'. People can be propagandized but not indoctrinated, since 'propagandized' only speaks to the attempt, and does not say whether the imparting of a stance is successful.