Read between the lines, kid.
Suppressing speech based on words and thought is the same as burning books based on material and depiction. On IRC even more-so than spoken language--as it's a written documentary that can be read and re-read by many--prohibiting people from using certain vocabulary is only robbing yourself of a literary experience.
If you can't be bothered to personally moderate a channel against spam; trolling; hate; and verbal attacks; without violating an individual's right to speak, then you are not capable of being a channel operator and need to step down.