But since birth time is speculative, this could be off. However, for the sake of the story, proceed with these positions, noting the assumptions.
Broadcasting live to tens of thousands of viewers for 8+ hours a day requires immense, sustainable energy. His Leo Sun gives him the natural charisma, stamina, and craving for the spotlight necessary to sustain a top-tier streaming career.
While his Sun seeks the stage, his (assuming a birth before late evening) provides the discipline and grit needed to maintain it.