The concept of "cult hit" has ruined entertainment considerably since its acceptance.

Because that's what he is arguing. That his shows that don't perform well immediately might totally become super big hits years down the line so it eventually works out to the same success.

So of course every loser creative type thinks they will create the next non-mainstream accepted masterpiece, aiming for a cult following from the outset (which is why they promote the parasocial fandoms so heavily) to blow up their product. Because they know it has no actual objective value to sell it into success with the normies and the mainstream.