An IP-based tool is still useful to catch casual malfeasance. The various Twitter bots logging edits from various government IP address ranges for example did h

An IP-based tool is still useful to catch casual malfeasance. The various Twitter bots logging edits from various government IP address ranges for example did highlight interesting edits sometimes. It's just important to remember that this is only the tip of the iceberg. Ultimately it's the structural weakness of Wikipedia that limits how much you can know about the contributors.