AMAZING. SMWW is acknowledged everywhere, in all walks of life, except obviously by the myopic DC comics. This is what iconic means. Physical representation of something that made an impact.
Something that is iconic is characteristic of an icon — an image, emblem, idol, or hero. Iconic often describes something or someone that is considered symbolic of something else, like spirituality, virtue, or evil and corruption
In this case SMWW represents and are imagery for Love, Equality, Strength, Heroism, etc. They represent the zeitgeist. Their imagery is all over from art galleries to clothing to perfumes etc . That is power when something can take on a life of its own with very little help from DC/WB because DC does not give SMWW the same exposure many other couples get in live medium like TV or movies. The Kiss by Jim Lee and this one from DC Presents, Mike Deodato's piece and Tony's Selfie are probably some of the most used romantic DC images outside of the niche comic community. It is on tattoos, licensed tees, art, cakes, merch etc.