If the site has been set up using Unite funds, then Unite should be held to account for it. If not, then why should Unite make comment about somebody making up a web site using private money?
Nonsense. If somebody who a representative of Unite is involved in behaviour (aimed at benefiting Unite, I might add) such as that of the fake website, then it is completely unacceptable for the union to say or do nothing about it, regardless of where the money came from.