It's about calling a spade a spade, seeing things for what they are without any influence of feelings or biases. This has nothing to do with defending the CA. If the player's inability to change the capital was due to engine limitation then it would be impossible for the game itself to change it as well.

Do enlighten me as to how the lack of capital change implementation (a simple mechanic in RTW1/MTW2) was not due to engine limitation, even though it doesn't seem like a particularly hard job to include if it wasn't (as well as city view, using diplomats for diplomacy, multiple buildings instead of the 4/5 block building system they've had since ETW etc.).Well, you already have your answer in the post you quote: 'However, since your capital changes when you lose it it indicates to me that it's not really a limitation of the engine that the players can't change it.' What this points out is that the game itself is capable of changing the capital. Additionally, one large war or crisis will be enough to change profits into loses. I've noticed you defend CA a lot on these forums over time. Settlement management Nation management Total War: Attila Guide.