Actually, I absolutely can say that it may be better to not have a second CATOBAR carrier than having it.
If they laid down a second carrier last year, it might be launched in 2025, and in service in 2027-2028 yes, but would still need an additional 2 years to reach full operation -- 2030.
Having a second carrier that only achieves proper combat capability in 2030, when 2025-2030 is the most risky and dangerous time, and all of the resources that a second carrier would tie up as part of its fitting out, sea trials, workup and training, is clearly something the PLAN considers unwise, especially if one thinks about the other, more deliverable capabilities and platforms that they can procure in that time which can achieve combat capability in the 2025-2030 period with a shorter time span.
The question that needs to be asked isn't "should the PLAN have bought a second CATOBAR carrier as soon as possible after Fujian".
Rather, the question should be "should the PLAN have bought a second CATOBAR carrier after Fujian, given it would likely only achieve combat capability by 2030".
My view, and it seems the PLAN's view, is that they preferred to buy other capabilities for that time period.