It's funny, because in Civ V the AI would frequently suicide its units over and over again into a deathtrap of ranged units. In VI, they give the AI even more boosts and free stuff, and took the lesson to heart... a little too much. Now the AI has an enormous military advantage and steadfastly refuses to utilize it in any fashion that could be considered competent. It is incredibly timid. Seriously, if it has 5x the military force it can afford to take some costly attacks! Really strange how 1UPT warfare is turning out.