Blocking on YouTube

I don’t like Hussein Elgasmi. I blocked his channel on YouTube sometime ago thinking I won’t get his videos again. I was wrong.

As you see his channel is blocked, however I still got his latest video in my YouTube recommendations.

I am still getting Boshret Kheir in my autogenerated playlists. I always delete it when it is there.

It seems that blocking a channel and removing certain video/artist from your playlists aren’t strong enough signals for the YouTube recommendation algorithms.

I thought the former is a hard rule, not optional parameter for the algorithm. Maybe it is a bug, or no one thought of it.