To be fair Spence has a long way to make the same impact Pep did and fighters in the 70`s fought on free TV and got far more exposure than modern fighters.
Not as popular mostly due to how Boxing has fallen in the public eye along with the way the Sport nowadays has been poorly promoted or less, Fighters not fighting the fights at the right time when the fans crave them, along with other sports namely MMA becoming vastly more in demand has changed the way the world views Boxing as a whole, Not entirely Crawford & Spence fault even with all their range of social media it's been hard for them to expand without Mainstream Media's cooperation, Even then the alternative to watching Boxing is so diverse & endless making it hard to reach the varying demographic.
Nobody knows who they are, even among the population that dont know who they are, nobody knows who they are. They dont who I am either when I ask them if they know who they are. So nobody knows who I am, and they dont know who they are. I know who they are, but that is because I dont belong to the population that doesnt know who they are.