More privacy for comments

It does not change existing comments and remove data from there, so you have to manually edit the SQL database for that. It neither provides further privacy mechanisms. For a proper privacy approach for your blog, you might need to take additional steps, like reconfiguring your web server and backup system. There are further WordPress plugins available for privacy improvements. Please keep in mind that this plugins is only a small piece to help with a very specific topic.

No, you use it at your own risk, I give no guarantees whatsoever. I have tested it with the Twenty Sixteen theme, and while in theory it should work with several themes and in conjunction with other plugins, it’s your responsibility to test it in your concrete setup.

Very much indeed so. As you see from the code, this plugin is very, very basic. Any feature additions, bug fixes and enhancements are highly welcome!

Yes, indeed! You can manually override the text of the name form field to pre-define an anonymous value, and explain to your users that anonymous or nicknames are preferred. See https://blog.effenberger.org/more-privacy-for-comments/ for a sample code snippet.