> Imagine you make a tool and someone proposes making a change to that tool that would be potentially useful to slavers, people who enslave other people. This makes you hesitate. Pointing out that people already use similar tools for slavery probably wouldn't make you change your mind.

In this case, though, the tool is trivial to make. Any "slaver" that wants it can easily make it themselves. Foregoing making and using that tool for use in Emacs does nothing whatsoever to impede, dissuade, or discourage "slavers" from getting the tool. It just makes it much harder to give Emacs some features that many of its competitors have.