Internet censorship is very easy to do, I don’t know why some people tunnel-vision on the fact it’s not perfect. It doesn’t have to be perfect to still be very effective.
That was my actual point. It's effective for censorship and targeting the broader population. It's ineffective for preventing piracy as a lot of people there are indeed tech-affine and belonging to the <1% that will go the extra mile to circumvent it.
So implementing provider and dns blocks against piracy is either stupid or an intentional lie. I assume the latter.