Its pretty obvious he is replying to this:
Fuck dissenting opinions!
And saying that if those dissenting opinions are calling for the banning of other opinions then it's not a valid form of dissent or one that should be allowed to flourish. It's a similar argument that the weak trolls used before from SDBH when they said mods banning people were exercising their right of freedom of speech or expression and that PV were censoring by stopping them doing it.