It sounds like you had a memorable experience watching that group's performance. It's not uncommon for some artists or performers to prioritize the live experience and feel that recordings might not capture the essence or energy of their work adequately. By choosing to focus on live performances, they can create unique experiences for their audience with each show, showcasing their creativity and adaptability. While recordings can preserve the music for a broader audience and provide a lasting artifact, some artists believe that the live setting offers something special that cannot be replicated. It's all about personal artistic choices and preferences.