Earlier quoted context omitted.
ISPs get threatened all the time and don't take content down just because some rando is mad. Kiwifarms needs to provide proof that ISPs are being threatened, as opposed to the more likely scenario that the harassment victims are filing normal abuse complaints and alerting the ISP to the TOS violations taking place all over the site.
If this were the case, I wonder how 4chan, stormfront, etc. stay online. Surely 4chan's providers get floods of complaints about doxxing etc. Or pastebin for that matter. The fact that the EFF is writing about this case and that they're forced to use KF as their one example (clearly they find this distasteful & would prefer to use any other example if they could) indicates that something is unique or at least peculia…
The other difference is the site owner actively encourages harassment and bans any discussion to the contrary