I guess maybe it depends on how you read it? To me, it read like > This sound is often attributed to X. But <some component of X> doesn't make sound that human

I guess maybe it depends on how you read it? To me, it read like > This sound is often attributed to X. But <some component of X> doesn't make sound that humans can here. The "people say it's this, but actually ..." reads, to me, like they're saying it's _not_ this. Which was point 4.