It's understandable. I'm quite the very intense observer and have experienced seeing a lot of traced, stolen, pirated and AI generated content, especially on the launching of Webtoon Spanish. I always take a look at certain patterns and things that correlate to one another, mostly since that's the kind of approach I had to art as a self-taught.
A way to identify when something is AI is by looking at the corners of drawings, sometimes stuff looks merged or, despite being quite "skilled in anatomy or shading" certain details, the smaller the object, it tends to become a blurr and quite non-identifiable.
In this case, there was also a few things that made it more obvious, there were certain stuff redrawn on top of the AI, some of the hands, and the plates in the sink, skill wise, coloring and shading should have matched the rest of the illustration besides, there was the difference in the lineart as well, be it a more pixelated or bigger brush, or the roughness amateurs tend to have while doing a line, which is slow and putting certain pressure, instead of a confident and light stroke.
Final detail would have been that, anyone with quite a high-artistic level would at least have a bit of knowledge in panel arrangement, usage of proper font and just overall a more harmonic composition of the overal image, with dialogues and the closing of panels, or there are very obvious mistakes like not keeping the design the same (Someone made a very evident of the sleeves of the character changing lenghts) and such.
There is people that are skilled but never made comics, but visually, there is a certain balance when they create something, instead of the uneven, paint-like copypasted thing the author did. They tend to keep the consistency of their characters as well
