Answer
No, Sergei Diaghilev's career as an art patron, impresario, and ballet director did not extend beyond his death. He passed away in Venice, Italy, on August 19, 1929, at the age of 57, leaving behind a profound impact on the world of art and dance. The Ballets Russes, which he co-founded and nurtured, continued to perform after his passing but without his visionary guidance and leadership.