If you say something like that in a semi-public channel with plenty of lurkers.....it wouldn't surprise me that it triggered someone's reaction.
but on the other hand, if your character makes that kind of threats on a regular basis, as long as it is In character, then the ban is debatable. After all remember eve is "ESRB:T"
taken from here
Content is generally suitable for ages 13 and up. May contain violence, suggestive themes, crude humor, minimal blood, simulated gambling and/or infrequent use of strong language.
There's teen rated language, with swearing and crude humour, then there's Funk openly admiting her character was talking about cutting little kid's faces off in a public channel.
Ok, so yeah, there are the Nauplius' of Eve RP that want to do horrible things to Slaves. But sometimes, you know, people can just cross a line. As a father myself, I would not approve of my son in his teens reading about/playing things to do with cutting children's faces off. One could say Grand Theft Auto, with violence and foul language, isn't a great influence, but atleast you can sit down and talk about crime/theft and ensure your teenage child gets that it's crime. Cutting kids faces off? That's a bit out there.
Now, whether CCP should/can ban on that basis is neither here nor there frankly, as CCP can ban anyone they want for any reason. It's their own game. However, one thing I'd love Funk (and Nauplius) to understand is that you know... There's only so much refferences to graphic murdering sprees/sexual habits/torture methods etc I'm willing to tolerate for the sake of RPing a bad guy. There's a line where I stop thinking your character is evil, and start thinking you're either just a bored edge lord, or someone with some serious issues that need sorting.