This book was dated since it occurs in a China that fractured into two sometime in 2001 or 2002. This scenario was possible before China opened the door to the west and took trillions of FDI and allowed the CCP to have an outlet for any social and political dissent. Why protest when everyone is getting richer? To use capitalistic language, when the water rises, the whole ship floats. Meanwhile, Taiwan had its own agenda to push. Taiwan had its own beliefs about the mainland Chinese.
Cobb was writing at a time when the Zumwalt style hull and the F-22 Raptors were the hottest things in military technothrillers. IRL, the price tags killed or limited the project. Remember how the Zumwalt-style hull that the USS Cunningham is based on? The USN wanted 32 Zumwalts; instead, we have three. Raptors were supposed to replace ALL the F-15s. Today, there are only 185.
As for the tactics, in a sense, they were still being written. The fictional Amanda Garrett was able to pioneer the doctrine for such a ship - a raider / sea control ship / fire brigade. Hence her butting heads with Admiral Tallman and his tactically conservative chief of staff Commander Walker. Was such a ship a mere tripwire and outer defense of a Carrier Battle Group? Or could the USS Cunningham and her captain operate independently with its own mission and draw on the CBG's assets in support? Or were the solutions in search of a problem to solve?
Those background questions don't detract from my enjoying this book. I treat this almost as "alternate history where modern China never rises."