Your quote implies there is an interpretation such that the term "J-15B" being used refers to the name western media uses and not its official designation. I'm saying that interpretation if true would make that 玉渊潭天 article misleading since J-15B isn't in quotations where as “三代半” is in quotations, and J-15B is also in a separate sentence from 欧美标准.
There is nothing wrong with waiting for more usage of the term J-15B from official sources before confirming the name, but I think many ppl who read that article the first time just assumed J-15B was the official designation.
Also 玉渊潭天 isn't a single reporter, it is CCTV's new blog based media brand.
Okay, I understand what you mean.
So, I'm saying the entire part of that section (both quoted and unquoted) seems non-confirmatory wrt the name I'll paste the whole part below:
除了舰艇,谭主注意到,美媒还特别关注到,画面上出现了歼-15B型战斗机。
军事专家张军社告诉谭主:
现代战斗机的分代在世界上有两种标准,比较主流的是欧美标准,按照这一标准,战斗机目前发展到了四代。
在欧美标准中,三代机的主要特征是应用电传系统具有超视距打击能力。歼-15B型战斗机,具备“三代半”的特征。该型舰载机具备更强的超视距打击能力。
The part which I've italiciazed is from Zhang, talking about the characteristics of generations, and how J-15B is a "third and a half" (aka 4.5th) generation fighter.
Fine, but that part isn't the reason why I suspect/wonder if the "J-15B" name is being used by 玉渊谭天 as derived from western/foreign media.
Instead, the reason why I think it is due to the opening sentence of that section, here: 除了舰艇,谭主注意到,美媒还特别关注到,画面上出现了歼-15B型战斗机。
My suspicion/fear, is that the writer of this article noted that foreign/English language media has been covering the new J-15 variant and dubbed it as J-15B, and so they went along with calling it J-15B for purposes of the article without definitively confirming with what it actually is, and then the asked Zhang for comments using the same J-15B name, and Zhang went along with it.
If they had not mentioned foreign media in any capacity, and had just straight up written "the new fighter, J-15B, is our navy's new type of carrier based fighter" or something like that, I would've considered that a few notches more convincing.
But as it is, I consider it unhelpful and just adding to the confusion due to being indecisive.