Good. It should require a court order to take someone offline.
It's not much of an ask to at least keep DDoS providers out, even from a free speech absolutist position it's a stretch to say that DDoS should be protected speech.
If DDoS4U gets banned they can just rebrand as DDoS4Less and CF is (willingly?) none the wiser that it's the same people behind it.
What you are asking for is KYC to be implemented.