As of my last knowledge update in September 2021, Kyrie Irving is known for his exceptional basketball skills, particularly his dribbling, ball-handling, and scoring abilities. However, I don't have information on any specific developments or changes in his playing style since then, including any focus on shooting without using the backboard. Shooting without the backboard, commonly referred to as "swishing" shots, is a skill that many basketball players strive to master. It requires precise aim, excellent shooting mechanics, and a deep understanding of the court's dimensions and angles. If Kyrie Irving has been working on this aspect of his game, it would be consistent with his dedication to improving his overall skill set. For the most up-to-date information on Kyrie Irving's playing style and any changes in his shooting technique, I recommend checking recent sports news sources, interviews, and game analyses.