This is a solid article. USNI has better standards for China commentary pieces than most western publications. That said, this bit did make me laugh:
"The carrier operations are less impressive because the planes are too good."
I wasn't sure how to interpret that part of the article.
My understanding is that blue water operations tends to be interpreted as the distance of operations from one's home ports in absolute terms.
Whereas that part makes it seem like if one has a longer ranged carrierborne fighter as part of your airwing, then it isn't a blue water operation?
To be fair, I can understand to an extent that 740nmi could be argued to not be "clear cut" blue water distances, but I don't think it has anything to do with the range of J-15.
Some of the numbers and designations of various missile systems are poor/out of date/incorrect.
And the article also uses the oft mentioned trope of "PLAN being largest navy in the world" based only on ship count which everyone should know by now is a terrible metric.
One thing I would've expected the article to focus a bit more on is the nature in which the PLAN's CSG exercises are probably more about doing open ocean CSG exercises rather than simply focusing on carrier aviation.
There is something to be said for doing naval aviation in the more open ocean of course, but at the same time if it's intensive flight operations that the PLAN wants to do for their pilots, deck crew and so on, then it would likely be that they'd focus on practicing that closer to their land bases first.
But what they can't practice closer to the mainland, is doing long distance maneuvering and CSG coordination and activities over larger expanses of water.