I think the Puerto Rican fanbase or any Fanbase who only follow boxing for nationalistic reason can gain in new perspective on appreciating and being a fan of a fighter's skill then where he comes from which would enrich their enjoyment of the sport even more.
"El Finito" Lopez, "Chiquita" Gonzales, Chicanito, and Chavez were some of the fighters that gravitated me to boxing because of my Mexican background. Since then I have evolved into loving the sport more for what it is then just nationalistic reasons. Am not saying the being nationalistic is necessaryly bad, but it can limit you on truely enjoy the complete talent in boxing. Just my 2 cents.