The author very carefully avoids mentioning what web serial this was precisely, but from context I am pretty confident he is talking about Worm [1], for anyone who is interested.
If the author forbade, say, the translation of his work into French, or forbade the reading of it by people with brown hair, or forbade the reading of it on browsers other than Internet Explorer, I'm sure you'd agree with me that such a restriction is insane, and would refuse to cooperate with it.
This restriction he is trying to impose is a bit less crazy, but he has just as little right to make it.
[1] http://tvtropes.org/pmwiki/pmwiki.php/Main/DeathOfTheAuthor