For planefags to weigh in:

https://theaviationist.com/2018/12/07/what-appears-to-be-a-fake-chinese-j-20-allegedly-spotted-at-u-s-base/

“File this under, “Too Weird to Believe, Too Bizarre Not to Report”.

Text too long to post… final paragraph:

“There is a small chance this is a remarkable “scoop” of a story, but a much larger chance something else is going on in this photo or with claims of its origin. In any event, this is one of the most bizarre and interesting aviation stories we’ve seen in some time.”