I was using version 3.0.3
I am a web site designer and coder so I know I will eventually fix it.
Jonathan however replies to emails fast and is nice. (support related)
I misunderstood what the reviewer wanted to do. Yes, "Public" can add attachments to articles if "Public" can edit the article and if the permissions for Attachments are set to allow public creating of attachments. I just tested this and it works.
To properly uninstall Attachments, uninstall the "Attachments Package" which uninstalls the component and all associated plugins. I agree there is a problem that occurs if just the component is uninstalled. I will try to fix that for the next release.
Very well designed, Thanks Jan!