I have to imagine it's for backwards compatibility. Seems to have been a choice made in 2008[0] if not before, although new handles are primarily accessible via

I have to imagine it's for backwards compatibility. Seems to have been a choice made in 2008[0] if not before, although new handles are primarily accessible via `/@handle`. 0: https://web.archive.org/web/20080501135434/https://www.youtube.com/fred https://web.archive.org/web/20080501135434/https://www.youtu...