As I said in the comment above, I was doing that, it was kind of working although I wouldn't say well. But then it totally stopped working - "don't recommend ch

As I said in the comment above, I was doing that, it was kind of working although I wouldn't say well. But then it totally stopped working - "don't recommend channel" stopping working and I think "not interested" stopped working too. The only solution was to clear my watch history and start over. If you search you'll find this is extremely common - I think there was even a HN post about it a few weeks ago.