As I have often said, forums like this are the only outlet they have. Seems all we can do is grin and bare it, and keep refuting all of the nonsensical stuff like BNS.
The first forum I ever signed on to was one run by the ABC [Australian Broadcasting Corporation] whose patron was Dr Karl Kruszelnicki, and we had a young GR theorist and a professional Astronomer.
That forum is now defunct otherwise I would still be there.
The thing to realise is they are making no difference to the greater scheme of things, and as long as the members here keep refuting them, asking for evidence, reminding them that peer review via the scientific method is paramount, I'm sure most visitors will in the end, recognise them for what they are.