Really? I mean, yeah it's in a ponytail, but it's shorter than waist length in her most recent youtube. Unless there's some VERY clever length hiding going on, I don't see how it could still be as long as it was.
Is it possible the onlyfans vid you bought was from last year? The one where she's in a pool with a floatie was what made it seem like there was no way it could still be long.