Not true.
"Posting others personal and private information without consent." is the only rule that could be considered protection from harassment.
Racism and sexism and all other forms of discrimination is harassment. To say admins don't protect players from harassment on a daily basis is false. Just because anti-discrimination rules aren't specifically worded under the phrase harassment doesn't mean they don't protect you from blatant harassment.
Skial's current rules has a great compromise that protects players from overtly offensive players that enact discrimination, to offering the free speech of abrasive players who get invigorated by the game.