[runxel]

Because it is stupid, that's why.

If only I had a dollar for every time I was blocked somewhere just because somebody else had used the IP just before me to do bad stuff. Worst offenders out there never clear the list, even. In a world of a shortage of IPv4 that approach is just madness.

It's also the opposite of effective. More like bogus effectiveness. Only hurts innocent bystanders.

[mrguyorama]

I have hard business data that shows, no, IP bans are still effective today, across millions and millions of people from all over the world. Using IP bans on bad actors helps immensely to block script kiddies and other low effort techniques, and forces more intelligent actors to pay for residential IP addresses to do their bullshit.