Actually, they have already suspended the service for sci-hub, albeit under a court order. https://yro.slashdot.org/story/18/02/05/1944225/cloudflare-terminate

Actually, they have already suspended the service for sci-hub, albeit under a court order. https://yro.slashdot.org/story/18/02/05/1944225/cloudflare-terminates-service-to-sci-hub-domain-names https://yro.slashdot.org/story/18/02/05/1944225/cloudflare-t...