Two armies take the field. One brings their swords and their gentlemen's honor. This is how Real Men have always fought, it's Right, and it's the way they'll fight today.
The other brings machine guns.
Maybe there is such a thing as absolute virtue, and maybe the army of swords has found it. Maybe it's worth dying on this literal hill to defend the way of the sword. Maybe they believe insisting that the world "should" work some arbitrary way will make it so.
In any case, by fighting this way they've chosen to lose. By losing they've ensured the values they're supposedly defending won't survive—so what was the point?
If your actual true goal is to preserve the way of the sword, you bring artillery and tanks and wipe the other army off the map; then you go back to your way. Or make alliances in which your swords can serve some purpose, or use diplomacy to keep the war from starting. Just anything that's not the least effective strategy.
If your goal instead is to feel Right, you fight as Real Men do and guarantee the way of the sword is extinguished.
There is no world in which you fight with swords against machine guns while ensuring the continued existence of the way of the sword. (There's an echo of the paradox of tolerance here.) You have to choose between defending it effectively, preserving it as much as possible in the world that actually exists, or doubling down and losing everything on purpose for nothing.
It's tempting to insist there is such a world, but that's just insisting on the way of the sword, again, except about possible worlds.