The exact original source of this who cares clip is not clearly documented, which is common for short reaction sounds that circulate through soundboards, meme pages and video edits. Its appeal does not depend on a single show or creator, because the phrase itself is instantly understood as a blunt way to end a discussion. As short-form video grew, creators began reusing the same dismissive line as a reusable punchline, dropping it into arguments, fails and exaggerated stories. That flexibility is why it keeps appearing, since almost any overblown moment can be deflated with two words.