Am 2020-06-13 09:24, schrieb Didier Kryn:
>     AFAIU defaults is a placeholder for when there's no option to pass.
> Therefore, if you specify nofail or noauto, defaults isn't needed.

According to the man page of mount:

defaults
               Use the default options: rw, suid, dev, exec, auto, 
nouser, and async.

So defaults is only a shortcut for rw,suid,dev,exec,auto,nouser,async.