You're thinking solely in terms of private individuals. Other entities exist and have to be internet-connected to function; corporations, nonprofits, government bodies, institutions. They can't very well use pseudonyms because their whole reason for being is to be accessible to the public.
An episode like that costs tens of thousands of dollars in lost productive time, police response and investigation etc. And it's increasingly common.
I don't think ISPs can or should proactively try to prevent this (or they'd have to preemptively scan and evaluate every packet request), but I also don't think your dunk on the ACLU has any substance. If an ISP knows that a customer is bad actor because it's brought to their attention in a credible and rigorous way, then it seems quite legitimate to me to cut them off.
So that makes them easy to target for abuse, eg https://oaklandside.org/2023/08/29/chabot-elementary-evacuat...
An episode like that costs tens of thousands of dollars in lost productive time, police response and investigation etc. And it's increasingly common.
I don't think ISPs can or should proactively try to prevent this (or they'd have to preemptively scan and evaluate every packet request), but I also don't think your dunk on the ACLU has any substance. If an ISP knows that a customer is bad actor because it's brought to their attention in a credible and rigorous way, then it seems quite legitimate to me to cut them off.