Dangerous advice for shared hosting in config-defaults.php

In htdocs/lib/config-defaults.php, we currently have the following:

  // directorypermissions - what permissions to use for files and directories in
  // dataroot. The default allows only the web server user to read the data. If
  // you're on shared hosting and might want to download the contents of your
  // dataroot later (e.g. for backup purposes), set this to 0777. Otherwise,
  // leave it as is!
  //$cfg->directorypermissions = 0700;

I don't see a reason for the 0777 recommendation. That should probably be a 0755.