Mario has been a familiar figure in video game culture for decades, which helps a simple greeting addressed to him travel easily across memes, streams and short-form videos. Clips like this one are often shared as reaction sounds rather than as dialogue from a specific scene, and people search for them using the phrase they hear, including hi Mario. That makes the sound useful beyond a single game, because viewers recognise the name instantly and understand the playful tone even without context. Its staying power comes from that familiarity, not from a complicated joke.