OP's being a bit bombastic, but his point is fundamentally correct. Yes, the most pervasive propaganda system in history gives everyone raised in it brainworms, but they can still escape them, they do have a choice that they're just not taking. It's not an easy choice, because the propaganda builds up layers of defensive brainworm fortifications that reject any attempt to undo them and because their material interests align with the status quo narrative, but it is still a choice that they have.

I think one could compare it to how historical apologia so often hinges on the fallacy of "oh well we can't be too hard on them for [absolutely heinous thing some historical figure did and/or said], after all they were a product of their time so we can't exactly hold them to modern standards can we?" Because yes, people are a product of their environment and that environment is so often actively toxic and full of brainworm spores that it seems inevitable that it will only create monsters, but everywhere and throughout time people have still overcome that poison and become better than it. I feel confident in saying that even where we have no extant records of it there were people opposing horror and injustice and being silenced for it, not even allowed to become a footnote in the historical record.

If they could do it, what is anyone's excuse today?