This is not a question that we can specifically address even though we may have an opinion. I think it is a function of :
(i) Level of technical and industrial expertise in executing the plans;
(ii) Design trade offs decision matrix between mission requirements; complexity in systems; and desire speed to commissioning
(iii)Political and military leadership and the dynamics thereof
I agree that any such military procurement is dependent on those factors, however I was under the impression that you doubted the possibility of concurrent development for carriers mostly due to technical grounds.
Putting it another way, if there was a way for us to only focus on the technical and industrial capabilities necessary for concurrent/near concurrent carrier development, and assume that there was appropriately sensible levels of political and military support for the project, what would level would the minimum technical and industrial capabilities need to reach so as to allow for a sufficiently low level of risk?
It is of course a rhetorical question.
I myself have stated what I believe are the PLA's needs and timeline of needs for carrier development, which would drive political and military requirements (and what the acceptable levels of risk are), so the question for me is whether the industry is capable of supporting near concurrent development, with well defined requirements and capabilities that they want to achieve. And I have erred on the side of yes.
Ability to build a big size commercial vessel does not necessarily mean one can build a carrier. This is a subject that is way off my pay scale. I would draw on a Rand Corporation study on differences between Military and Commercial shipbuilding and I quote "Most respondents stated that although they recognise that military and commercial projects require different worker skills, they regard the skills as generally portable, except for work on submarines and combat systems.)" Although carrier was not mention I guess it is safe to assume it is in the same category as submarines in terms of specialisation and that the skills are not necessarily portable. In addition. it is also mention and I quote from the same study "All the firms we interviewed agreed that, although military-commercial cost and time comparisons are highly dependent on ship types and equipment lists involved, military-ship design was more time consuming. It can take two years or more to design a military ship compared with six months for a commercial ship. Predesign work on a frigate or submarine can amount to 10 times that needed for a tanker. Developing the requirements set is more challenging for a warship—for which multiple functionalities need to be considered to meet an uncertain threat—than for a tanker, which is intended to profitably transport a fluid product of some type. This disparity in design effort occurs for several reasons. Warships often have relatively large propulsion systems for the space available to accommodate them, and their electrical systems must be capable of greater loads. Weapon and sensor systems must be planned, and the number and placement of such heavy systems must be addressed to ensure that the ship’s centre of gravity is not too high."
I agree that being able to build civilian ships does not mean one can immediately build advanced military ships. It very much depends on the complexity of the civilian ships in question. Advanced oil tankers or large cruise ships require may complex skills and capabilities that can also be applied to military ships. Building a large variety of civilian ships also would yield a variety of skills and construction techniques that would be applicable to military ships.
That is why I chose the shipbuilding industries of south korea and Japan as examples, given the advanced state of their industries and the wide array of ships they were able to build (even if we ignore their LHAs/Ds like Dokdo, Hyuga and Izumo).
Given the complexity and the timelines being advanced, I regard it as rather unrealistic to proceed with concurrency. We will have to disagree in terms of pathway. Time will tell which pathway will prevail.
Okay then, we'll have to agree to disagree.
But I think we do at least agree that among the major reasons for disagreement, is the differing opinions of the capability and relevant experience of the Chinese shipbuilding industry (which is the end point I was trying to make this entire time)?