Tracer is one of the central heroes of Overwatch, Blizzard's team-based hero shooter first released in 2016, and she quickly became the game's most recognisable face. Short voice lines like this one are shared widely on soundboards because they are easy to recognise even out of context and easy to reuse in edits, streams and reaction clips. The hey ya greeting works especially well outside the game because it needs no explanation: it sounds friendly, energetic and unmistakably like Tracer, so creators keep returning to it for quick greetings and comedic timing.