I think you misread that. He's recommending not completely banning the subject.
the part the parent appears to be commenting on is:
"[...] unless you feel very strongly about it."
i.e. complete ban is okay if the organizer feels very strongly about it.
alt Hacker News
the part the parent appears to be commenting on is:
"[...] unless you feel very strongly about it."
i.e. complete ban is okay if the organizer feels very strongly about it.