Comment by fabiomaia

Wow even release downloads were taken down

  $ brew install youtube-dl
  ...
  ==> Downloading https://github.com/ytdl-org/youtube-dl/releases/download/2020.09.20/youtube-dl-2020.09.20.tar.gz
  ...
  curl: (22) The requested URL returned error: 451 Unavailable for Legal Reasons
  Error: Failed to download resource "youtube-dl"
  Download failed: https://github.com/ytdl-org/youtube-dl/releases/download/2020.09.20/youtube-dl-2020.09.20.tar.gz