Is there a relevance to the story that I've missed? The announcement doesn't mention this organisation and I can't find any relationship going by its About page or Ben's.

No. It has no connection with Stratechry, but I think folks who like Stratechry might like these classes as well.

Is there an online equivalent course?

This one seems to be in person only.

No, they are not online classes but only in-person by a former UC Berkeley professor and venture capitalist.