Looking at the comments, has anyone actually read the article?
A rare occasion where Betteridge does not apply.
Yep! I think the more-rigorous version of Betteridge's law is: Any headline that ends in a question mark can be answered by discarding the insinuation in the question.
Ukraine captured and publicly interviewed a pair of them.
There is publicly available combat footage of North Korean assaults beaten back with drones.
The answer is a resounding: yes, they were demonstrably there helping with Russia's invasion of Ukraine. Specifically in the Kursk region.
Got any links?
Sure do. Content warning, it's combat footage:
And here is a link to some interviews of captured North Korean soldiers:
Edit: new video with more closeups: https://lemmy.world/post/25617122