[NateEag]

Any sane piece of software should warn you before doing a highly destructive operation.

Something like

  You are trying to remove commits from twelve branches.
  Are you sure that's what you want to do?  
  Include the --force option to go ahead with this change.

would be a whole lot better.

Even if it gives you the tools to undo the mistakes, it saves you time and stress if it keeps you from making the mistakes in the first place.