In this case, I think he was referring to the hugely popular on tumblr show called literally Sherlock that was highly praised for its "portrayal" of an intelligent character.

It had a final season so bad people literally memoryholed it, rewrote history to call it always trash, and forget that its the only reason Benedict Cumberbatch got famous, but it was one of the leading examples of "smart is sexy" a decade ago.