My take on it is that there are some pictures that people post (not just @xyqq exclusively) which are of dubious reasoning as well.
Each thread only has space for ten posts. People's time is limited in a day.
This is a question as I see it, about "do we want content to be posted here even if it is not newsworthy/interesting/visually appealing/particularly high quality" -- which in turn is a reflection of what do we wish this forum to be more like.
Frankly I do not get overly annoyed by things like "unnecessary captions" because I just glance over them, but at the same time I very much understand the desire to want to improve the forum and not make this a place where "anything goes" as far as content is concerned, particularly in the flagship military threads, where they are not "general military picture" threads.
In either case, I think if this can be discussed civilly to a conclusion that would be beneficial, so at least one side can come to a compromise with the other.
Criteria such as interesting/newsworthy/visually appealing are more or less arbitrary. Members here have very different experience of PLA watching as well as different access to primary sources from Chinese internet and print media. Certain images/magazine scans might be newsworthy to some but entirely redundant and useless to others.
IMO, low image quality and repeats are the only ones we should keep off flagship military threads. Otherwise, it could make SDF less accessible to newer members.
With the recent crackdown by Chinese government on domestic military forums and defense-related posts on weibo, we are bound to get much less images. In this more restricting environment, can we really afford to become more picky about what we can get?