This is an interesting situation.
I would have thought that if the humans were ruled by some totalitarian power with something like a thought-crime concept, no one would have asked Callum questions like “How did you escape?” or “So you tricked them?” Because it feels like the colonel really is confused about the situation and wants to know what happened. Someone thoroughly brainwashed by propaganda would have outright rejeced the idea that a supposedly vile enemy race like the pactrids could ever have let anyone go just like that.
And I can imagine that even as far down in the conversation as the “So you tricked them?” question, no one would have started to suggest reeducation if he had answered with a story of subterfuge and valiant escape.
On the other hand, they do have such a thing as reeducation. Which means they have had to deal with dissent before and apparently decided to go with an authoritarian approach.
Also very interesting was the “Even if that were the case, we still need that lumber. We wouldn’t survive without it.” remark. Because we still have no idea what exactly the humans are using all the wood for!?
Now, is the need for wood a story to conceal some genocidal hatred of pactrids? Is this hatred towards pactrids and the story of their unprovoked attack a smokescreen to legitimise all the land grab and resource gathering?
The most depressing or tragic situation I can envisage would be if no one really needs the wood anymore and no one remembers how the fight against the pactrids actually started, but everyone keeps doing the things they have always done and everyone is reassuring themselves and others that what they are doing is right, resulting in the shared rationalisation of enmity and need for resources.