I would say it's not a credible source at all. It's not too different from the military pages of news outlets like Sina. Although it doesn't have a notorious reputation as MC or Kanwa, but it's basically because the channel is more a scavenger of news/rumors rather than an original source.迷彩虎 has a YouTube channel, and I'd occasionally watch some of his stuff especially when I'm trying to get a feel for a topic I'm unfamiliar with before doing further browsing on the web.... While I wouldn't call him a fanboy, I wouldn't call him a credible source either - not as credible as Rick Joe, Denio, or Henri K anyway who are proven PLA watchers where their insight is actually backed by actual footage or citation from PLA/CMC documents.
Moreover I disagree with 迷彩虎's assessment. I can see two scenarios of how the J-16D is fielded onto front line units:
Either scenario the PLA doesn't need the 600 J-16Ds airframes like the J-10C as 迷彩虎 suggests, because the J-16D serves a niche mission of electronic attack rather than a front line fighter. Case and point a USN carrier air wing (~80 aircraft) has about 5 Growler airframes (nine CVWs gives us ~50 frontline Growler airframes), and the USMC only had four Prowler squadrons.
- The PLA I believe has three Special Mission Divisions, and I can see them fielding the J-16D into a couple dedicated electronic attack brigade/regiment... sorta like how the 93rd Air Brigade (or are they still a regiment? Denio correct me if I'm wrong here ahaha) operates the J-8FR (reconnaissance variant)
- A fighter squadron has 4 aircraft, two squadrons make up a flight group... and each flight group typically has two spare backup airframes. Three flight groups then form a brigade, giving a brigade a total of 24-30 airframes. So I could see a J-16 Air Brigade having a squadron or a flight groups worth of J-16Ds.
Based on what I'm reading both J-15D and J-16D are both to be fielded by the PLAN and PLAAF respectively, and I can't find anything to suggest either program has been canned.... In fact to double check my suspicions, I found Denio's tweet about the J-16D dated from last August.