It's not about the wall. That's just for shits and giggles (and clickbait). The real problem is that the Tesla also ran over a mannequin in rain and fog, while the Lexus with lidar did not.

It’s very clear it’s a wall. Kinda like old looney tunes.

They show a still photo in the video, where the engineer comments on that. He highlights the wrinkles in the wall image, imperfections and shadows that a human can see. The way he told it, it was hard to miss to a human