It does seem as if Youtube has got itself in a bit of a muddle as far as banning channels. Now of course they have the right to choose who is shown on their site but the ban-hammer seems to be a bit arbitrary
A fine example is the trouble one of the channels I follow got into. I went to the channel to look at the latest post. Instead I got a banner saying that the channel had been terminated for breaking the terms of service.
And what was this naughty channel I hear you ask.
It's one by a antique furniture restorer. Not the sort of thing that I think that anyone would find objectionable. Fortunately the channel was re-instated but it must have worried the person running the channel as he would have lost over five years of posts.