How come post was taken down After it was approved?

Regarding this post: post #68267

I understand and am fine my work being taken down for poor quality. But How Come this post, along with a couple others of mine, were First approved with no issue then suddenly taken down like up to a couple months later?
Especially after it was reuploaded by another user, where i then linked the original post in the replies letting them know I already uploaded as the editor of said image.

I'm fine with it being taken down, just Don't understand why after it was approved for roughly a few months.