Short crowd reaction clips like this became a staple of online editing because they borrow the energy of live sport and live shows without needing any footage of an actual audience. Creators layer the roar over gameplay, memes and reaction videos to signal that something impressive, shocking or absurdly over-celebrated just happened. The phrase the crowd is wild is also common commentary language during big sporting moments, which helped this kind of sound spread as a quick, universal shorthand for excitement across social video and streaming culture.