Doesn’t just look like it, it is. It’s not only ‘in the style’–certain approaches to AI-generated “pixel art” produce very prominent artifacts that cannot happen as a result of any normal pixel art workflow, even when the images are resized or compressed awkwardly.
Judging by the mod’s response I suspect you know this already, generated them yourself, and are just using this as a way to try and get more people to click the play button…but I like to assume the best intentions in people, and on the off chance you really did get these from elsewhere you can take this as confirmation by an experienced pixel artist that you got fooled.