Damnatio memoriae is devastating to a public figure, but it is doing KiwiFarms a huge favor. It lets them scurry away under some new rock and keep going under a new name. The worst thing you could do is probably just shine the brightest spotlight you can find square at their activities.
There is a good reason we erect monuments and museums to atrocities. It's not for ease of rubbernecking, but so that we can learn and avoid them in the future.
My personal semi-conspiracy theory on this is that the search warrant served on Keffals (no, not a SWAT call, a search warrant) contained some note that they got probable cause from evidence on a kiwifarms thread. Since then, Keffals has been running to countries with no extradition treaties to Canada and trying their hardest to erase that evidence from the internet under the guise of stopping suicides.
Although it does enhance my point, which is that Kiwi Farms benefits from this.
If the note references probable cause from a thread and the evidence is on kf, wouldn’t the authorities already have that evidence or be able to get a search warrant for it? Why would they search someone’s house for it?
If you try to convince them, likely you would get an unbelievable amount of negative online attention sent your way. Ironically the same thing they hate Kiwifarms for.
Basically, they had the allegations and enough substantiating evidence to go to the point of looking for more evidence, but not to get all the way to an arrest/conviction. A search warrant is the next step.
EDIT: Also, the police have most likely downloaded the information, but you never know.
In practice: The abstract entity KiwiFarms takes all the shit, very few of the people actually constituting its membership seem to take much flak; meanwhile its critics look completely unhinged, even though they're absolutely right and KF is incredibly reprehensible, they still do their best to undermine the credibility of their own cause by acting and behaving like a frothing at the mouth lynch mob much more interested in power-tripping and revenge than truth and justice.
The strategy is straight out of Sun Tzu on how to deal with a stronger army, and I haven't really seen any examples of anyone handling it well.
Now consider that Isabella's father Mike Janke is a former Navy SEAL who has a professional relationship with Matthew Prince, Cloudflare CEO:
https://www.youtube.com/watch?v=m1wio7sDDBA
These records have been wiped from the Internet Archive. I wonder how long they will remain on archive.ph.