Well, for them the jobs an their systems are just part of the world.
It's similar to how people in real life probably also would not question, if gravity will work the same way tomorrow like it does today.
So I feel it makes enough sense for me to not break my suspension of disbelief.
The trend of Shizuko not realizing how much of an imporant political figure she is continues.
I do not know much about ancient japanese politics, but even I realize, if she ends up killed it would deal a huge blow to the reputation of the Oda.
It would probably also, as others have mentioned...
You verbalized my thoughs perfectly.
It makes perfect sense to try to get in early with the ostrich beastmen, since they can do excursions into the dangerous south and come back retively reliably (decent toughness + high speed) without the need for years of training and/or expensive equipment...
And if a decently smart person gets their hands on it, increases the output further and compresses the blast into 1 direction you basically have a magitech firearm a "peasant" can use, which could lead to some let's call it political instability.