I think the argument is more that this tool by virtue of being easily accessible creates more malicious actors. Similar to how most people wouldn't steal a locked bike, but a larger portion would steal an unlocked one. It isn't that much harder to steal a locked bike vs an unlocked one, but the threshold is just a tiny bit higher so more people will attempt it. Conversely this tool lowers the threshold for stalking, so more people, who otherwise wouldn't, will use it maliciously. That isn't the fault of the tool or its developers, but it is something to be aware of when building any tool. When you release it, it may get abused by people for bad purposes.