The title claims it is "insanely impressive." While the art doesn't need to be "insanely impressive," if the title uses that phrase, we would expect it to be impressive.
I, my self, haven't looked at the article yet, but I would imagine the criticism is on a "click baitish title" - not on the art
Update: I have watched the video. That is damn impressive
I only looked at the stills before, but I agree that the animation really is an impressive achievment. However, there is nothing below the surface here. The stick figure takes a few steps and lifts its hat. The medium is impressive, the art not so much.
I, my self, haven't looked at the article yet, but I would imagine the criticism is on a "click baitish title" - not on the art
Update: I have watched the video. That is damn impressive