> I also like his positions on open source

Tesla's approach to open source has been poor. Tesla has frequently violated the terms of the GPL:

https://sfconservancy.org/blog/2018/may/18/tesla-incomplete-...

https://www.theregister.com/2018/05/21/tesla_inches_toward_g...

https://sfconservancy.org/blog/2019/oct/30/calling-all-tesla...

https://sfconservancy.org/blog/2023/dec/21/tesla-no-source-c...

These are fair points.

Famous guy has opinions about another famous guy; doesn't concern me.

That seems to be some decent thoughts, but who is Yann LeCun? Just another proprietary software star, a proprietary software unlike FOSS suffers from exactly same "secrecy" issues as rest of the Science as described by the man. Capitalism, capitalism is never changes.