He is correct, the casual followers of boxing don't want to see the sweet science, they want to see a bloodbath.

That said, sports are cyclical. Heavyweights alone went from Brawler John L. Sullivan, to boxer James J Corbett, to brawler James J. Jeffries, to boxer Jack Johnson, to brawler Willard, to brawler Dempsey, to boxer Tunney, etc etc

We'll see the brawlers come and go, but it'll have to be the right time for them to come back. And also certain guys who can brawl simply choose not to do it after a while....the shelf life of a brawler is nothing compared to a boxer.