Whenever the UK banned websites, they only ever banned specific domains. I would expect boomer congress to do the same.
Banned: Kiwifarms.su
New domain: kiwifarms.net/ch/tor/xyz/etcetera
Banned: "kiwifarms"
New domain: kiwifarm.su
Repeat forever.
If they say it's on ISPs to do it, they can be fickle too. VirginMedia banned sites as they were listed specifically, but BT would also ban derivatives. There's also a shared list all these providers have access to that automatically bans/filters out hyper-illegal shit and certain piracy sites, so if a similar list was created but specifically for sites that say no-no words and such things were illegalised, then the farms might be at risk, but I doubt such a thing would ever be made or implemented into law, never mind the 1st amendment it's just common sense.
Kiwifarms is so specific and harmless a website I can't imagine it appearing on anyone's radar for overly long. Like, harmless objectively speaking. There's no proliferation of CP or illegally acquired info, and harassment campaigns aren't organised to relentlessly badger and bully people offline and online, or encourage people with mental health problems to descend further into their insanity until they inevitably commit suicide...
They should ban reddit instead.