Quite the opposite. Sith has changed the tenor of all the six films and will be a major piece of debate for years and years to come as to how significant it truly is. The early talk about it rivalling ESB will also never end, and likely only grow stronger as more and more young fans who get to experience all 6 films with kid eyes grow up with their own perspective on the films, and not get bogged down and stuck in 1983 like so many OT fans here have apparently been living their lives.