You can try and report them. They will most probably be moved. There was another user who had a similar thread on Meta about 1-2 months ago where he asked the same thing. He showed examples of several altcoin discussions from the B&H sub and all were later moved. When it comes to your list, the first two threads have been moved to
Alternate cryptocurrencies, the last two are still in B&H.
I understand why some members decide to post their threads in B&H and not in the altcoin boards. Maus0728 offered some insights about his reasons:
Edit: Moved to BnH board since I can't get any response from Altcoin Discussion Board.
He probably tried posting it in the Alt sub, but he didn't get the help he needed. Considering how much spam is posted there, I understand his decision. If it were up to me whether or not to move threads where members need help and guidance from experienced users, even if the topic is not bitcoin-related, I wouldn't move them. That goes only for threads were members need help with a certain problem. If it's a tutorial or guide about an altcoin or altcoin-related service, I agree with you that such threads shouldn't be in the B&H sub.