bpc on "[Plugin: Related Posts by Taxonomy] Posts show up as related to themselves"

I'm restricting relatedness to categories. The plugin appears not to understand the idea that one would not wish the post one's viewing to show up as a related post as well. Short of trying to build a post-specific exclusion on every post, how do I avoid this?

https://wordpress.org/plugins/related-posts-by-taxonomy/

I'm developing this site under localhost, so I can't include links. Let me give a further example of my problem.

Suppose that Post A is about Domestic Mediumhaired Cats and is filed under the category "Cats." Further suppose that I have the plugin set up to show a sidebar display of related posts from that same category. At present, the related post listing would include Siamese, Angora, Maine Coon, Coish Rex — and Domestic Mediumhair. IOW, the post one is viewing shows that same post as a related item in the sidebar.

That's redundant and looks really weird. How do I avoid it? Must I construct a post-specific exclusion for each post?