1. babymetal didn't attack any person; they criticized a book's production.

2. babymetal claims to be a bookseller and, if true, they offered a specialist's insight into the quality of the information disseminated by a person being discussed at HN. (Though, their observation was off topic -- like most comments in most HN discussions.)

3. You want HN users, who are mostly code monkeys, to criticize a proposal to address viral diseases?