Well, if enough people agree with the statement it's ok to do xyz as the internet isn't real life (or implicitly agree with by behaving in such a manner), then

Well, if enough people agree with the statement it's ok to do xyz as the internet isn't real life (or implicitly agree with by behaving in such a manner), then it seems to me to be a reasonable default position to take. You and I might disagree, but that's just two data points. We probably shouldn't legislate or even feel too smug about our minority taste, as much as it is a minority taste. Regarding private conversations, I agree that the internet offers the capability to have private conversations, but I'm arguing that the medium tends toward people having fewer of them nevertheless. Of course, private conversation is not well-defined. I'd argue that a exchanging slurs between members of a sports team is more private than doing the same between virtual strangers on a CODBLOPS server; that mobbing during lunch break is more private than mobbing on Facebook; that a confidential conversation between friends is more private than an email stored for potentially forever.