This clip comes from a custom user made sound credited to Vondett, rather than a film, show or game, so its exact recording origin is not documented. It spread through soundboard sharing, where short vocal reactions are saved, replayed and dropped into chats and edits. The drawn out yes style fits a wider online habit of stretching simple words for comic effect. It remains used because the meaning is clear in any language, the length is short enough to spam, and the delivery turns agreement, excitement and sarcasm into the same quick reaction.