The Star Wars Prequel movies have a more iconic factor than the sequels do
There are so many aspects of the Prequels - sights, sounds, characters, and places - that have become icons in the Star Wars canon. Take the iconic fight at the end of The Phantom Menace, with two Jedi facing off against the menacing Darth Maul as "Duel of the Fates" plays in the background. Or think of the epic double showdown of Anakin versus Obi-Wan and Yoda versus Sidious, with more of John Williams' magical score accompanying them. These and so many other things - podracing, villains like General Grievous, the horrific Order 66 - are remembered fondly more than a decade later. Even the not-so-great parts, like Jar Jar Binks and some of the clunky dialogue, have at least been immortalized into jokes and memes. What will fans remember from the Sequel trilogy a decade down the line? The Force Awakens was just a rehashed A New Hope; The Last Jedi had Rey dally on an island and Finn in a casino; and The Rise of Skywalker's macguffin quest ended on a generically "evil" planet with Palpatine dying. Again. Their new characters don't hold a candle to Obi-Wan. Their fights can't match the duel on Mustafar. And their music doesn't come close to Duel of the Fates. Fans have remembered the Prequels for years, both the good and the bad. But when they look back on the Sequels, if their attitude is no longer that of anger, it will simply be that of apathy. There is nothing of note to recall about the Sequel trilogy. Or, if there were, it would pale in comparison to the characters, music, and moments of the Prequels.
This is largely a subjective argument. There is no objective way to measure how iconic a movie is. This argument simply lists favorite moments from the Prequels. By the same token, the Sequels also have plenty of iconic moments to praise. Plenty of people enjoyed the lightspeed ram scene in The Last Jedi, or the throne room fight from the same movie. Or how about the gut-wrenching moments between Han and Kylo/Ben in the first and last Sequels? The Prequels have had a decade for opinion on them to soften, and for nostalgia to cover them in a favorable light. One cannot argue about what will be memorable about the Sequels when they have just come out. Time will vindicate the Sequels, and illuminate the gems they have to offer. The Prequels don't have a monopoly on icons post-Return of the Jedi.