My thoughts are this. If you have been an 'ideal' player and something happens that pisses you off. That's normal. It happens. How you handle it is pretty telltale. If you go to your friend who is your sounding board for all things (not just this thing); sure. Okay. Rant. However, if you go off on someone in a Skype conversation, Discord talk, IM, Email, or various means we have off game -- well chances are this is more the real you. You have probably been doing this or levels of this before and not gotten caught. Just this time you picked the wrong person or felt comfortable that you would be let off for your crime and did it more in public.
I have a circle of people that when things go bad, calls are out of my favor, or random things that just happen -- I vent to them. They know I don't hate the game or the people but I need to blow off my frustration. I have been spending months and this dickbag just fucked up all those plans. Fuck him. I should just... fuck up his plans.. waaaaa. --- They know that I don't mean I'm really going to fuck up his plans. I'm just crying that my plan has to be revised. They know I'll be fine online and not be vindictive. So in this I think it's fine (but maybe it's not). Also, on game I will actually be fine after I sleep. Sleep makes things better normally.
Now if I went on public/game channel and had a meltdown. Or I did this to strangers that don't know me and have the rapport that I have with others; this is uncomfortable and really can be seen as harassment. I would never try to do that because I would feel uncomfortable because that's not my sounding board for my sanity (or insanity). So if someone feels comfortable, if you looked into it. They have probably been getting info OOC, they have been crossing OOC lines, etc. Now if this is an offense that goes on and on -- the game (Arx in question here) has been stated as a 'safe place'; that means they have to protect in a sense against that harassment. It's not a slope, but it is a sticky situation full of potholes.
So really, just don't be a dick.