Clickbaiting headline. Hotz and Levandowski are also experts and they agree with Musk.
More truthful headline: Some experts say, but then again other experts say.
Elon really is alone in claiming that lidar isn’t needed for self-driving.
Hotz can certainly be considered an expert as founder and president of commai.ai. Whether he is a loudmouth or not is less relevant.
The remark by Levandowski can be found here: https://www.youtube.com/watch?v=fNgEG5rCav4
Whether these guys are ethical etc. is not of interest for this question.
> Elon really is alone in claiming that lidar isn’t needed for self-driving.
No, precisely not.