To clarify: I don't see anything from blocked channels, but there are a thousand clones of blocked channels and YouTube ignores my obvious signal that I don't want anything to do with them.
I block a Minecraft channel and YouTube shows me another and another and another.
I block a K-pop channel and YouTube shows me more and more K-Pop.
I block a Minecraft channel and YouTube shows me another and another and another.
I block a K-pop channel and YouTube shows me more and more K-Pop.