you cant judge a book by its cover , watch the all thing .
Well in this case you certainly can. Someone who doesn't want to be identified while making an argument clearly doesn't want to held accountable for their claims. But science depends on reliable sourcing and verification; someone who does't want to play by those rules can be safely ignored.
Anyway, I can make a good probable guess as to why, and it doesn't do any favours to the idea of taking him seriously.