What's the point of banning an IP address?
Sure, 'serious' attackers have botnets of home users' PCs and insecure IoT devices and whatnot. But because Tor exit nodes are easily used by even unsophisticated attackers, they quickly get flagged as sources of abuse.
Most IP connections are dynamic, and always were. Assuming that a person is synonymous with an IP connection makes no sense to me.