Why list comments from followed instances?

Hello, I am wondering, in the backend there are literally thousands of comments listed, from instances who follow mine, also with global search disabled. What is the point of listing comments to content which is not part of my instance? Can this be disabled, otherwise should I manually go through and delete comments, which is an option?!

This is probably because some of your users are following (or have opened) remote content.

Thanks, the following option was enabled, Allow users to do remote URI/handle search, Allow your users to look up remote videos/actors