this site was a haven for the absolute worst of the Internet. If you got kicked off 4chan, went to 8chan, and then got kicked off 8chan you went here
It's more like Something Awful with a bit of 4chan mixed in.
First and foremost the site is fully of overt white supremacists. Many of who would like to keep that on the down low.
The site largely doesn't censor speech, so some users casually drop slurs. There are plenty who don't, however. It is possible to get thread banned, but that's due to being disruptive, not the content of their speech. There are threads on right-wing lolcows, left-wing lolcows, all across the political spectrum.
But it's also where you went to commit crimes. Lots of them. Swattings, Doxxing, cyber stalking and IRL stalking. You name it.
The site's purpose is to observe and document lolcows. Interacting with them beyond that is forbidden and users who do it get thread banned. This is no different than people blaming 4chan for something without evidence.
If this data makes it's way into law enforcement's hands a whole lot of people are gonna get a visit from your friendly neighborhood policemen. Which is ironic since publicly these are all "back the blue" types.
Highly unlikely. Most of the users give throwaway email accounts. Some use TOR to access the site (new onion URL: http://kiwifarmsaaf4t2h7gc3dfc...). This is in contrast to NeoGAF/ResetEra, who had their emails leak a few years ago, but that site requires real names/emails to link users to.
What people are so scared of with KiwiFarms is that it offers a permanent record of their behavior. 4chan talks a lot about lolcows, but it's anonymous natures and frequent thread deletions meant it was hard to keep track of things. Kiwifarms is fairly well organized with a culture insisting on backing up and archiving data.