Question about inappropriate behaviour and staff enforcement

my best friend has recently started playing this game and been telling me about it; i'm pretty picky with muds but I've been intrigued about some of the stories shes been telling me about so I've been thinking about trying it out.

Before I do though, I do have questions about a situation she's been telling me about with this guy named Fariden. Apparently they were doing some RP together and he started trying to push incest and rape storylines on her despite objections, trying to get out-of-game contact info, and threatened to report her to a GM if she tried to respond ICly by making this a conflict. She says it sounds like he does this to a lot of newer female characters, and she tried to take this to a GM. She was told to just avoid the guy?

I've seen some logs of this-- Fariden ignores clearly stated boundaries and goes forward with detailing these rape and incest fantasies and it's really messed up. The GM told her it's not an ERP game, but IMO that makes this behaviour even worse? There's no reason for a player to expect to be subjected to hearing sexual fantasies about them at all, let alone ones like that. Is it really official policy that it's okay to go around telling people how you want to sexually assult them if your target can just plug their ears afterwards? He already did the harm by including her in the fantasy.

The rest of the RP she's been telling me about still has me tempted but this makes me really wary. How common is this sort of thing, and is this kind of response from support normal? Is there a way to avoid this sort of guy without, you know, not playing a girl?