Same as now sure, but that shit is easy to notice for mods if it's an actual problem. Again we can and will still have to report and ban people on a regular basis, but most assholes get bored quickly and a small barrier will reduce the amount of work to do by a lot. If you have weirdly dedicated people, then that's more anti-raid tactics, and for that I can imagine a few specific ways to notice weird behaviour on a technical level.