Firstly, I came to distrust his "Own work" claims. In general, there are not enough meaningful EXIF data on his uploads, sometimes, he used PNG on photographic stills that I'd expect to be in JPEG. This points towards origins where the actual camera operator is not closely related to the uploader. Furthermore, the development of my distrust in the legitimacy of the "Own work" claim is based upon the following evidence:

• on several files, like File:Vietnamese people Street storming 2025 15.jpg, you get a EXIF line "Special instructions / FBMD0f00075d01000007650000f5880100adf101000a7f0200adab03002def04006b3c0500", IIRC, that happens on files which were processed on Meta's / Facebook's servers.
• The EXIF on mostly football / soccer themed imagery often contains a series of Vietnamese names, example: File:FC BARCA Train before playing against Real Madrid.jpg. This looks like the result of some professional IPCT tagging software, pointing to a source where several professional photographers pool their imagery into a database. The viewing angle on this example feels like it possibly having been shot from a location where standard stadium guests aren't admitted.
• Together with these EXIF based factors, the mix of European and Vietnamese motifs doesn't feel right to me, giving a look of a Social Media stream of a fan of some sorts. If I'd get to encounter such a situation on a Flickr stream while doing license reviews, I'd come to the conclusion of license laundering and would not pass the reviews.

For photographic imagery, this mass DR is based upon an alleged infringement of COM:L.

There are also some SVG files included. For them, I claim a lack of educational usefulness (COM:EDUSE). For File:Administrative divisions of North Korea.svg, I simply cannot fathom at all for what purpose it could be used, it is also of a bad technical quality (the text caption blends into the graphic).