The #fpc and sometimes the #lazarus-ide irc Channels have a troll whose current details are sh4rm4 (~sh4rm4@sabo.xyz)
You need to analyze the traffic, not the published name. That is often very different and an IP can be blocked.
He dislikes the pascal language
Happens all the time with the ill-informed. But in itself nothing to worry about.
Yesterday he changed his nickname to
That IS very serious!! and a fundamental reason to complain and alert. Especially when it is geared towards you a competent person to solve this problem ? I will gladly volunteer my time to do it since nobody else seems to want to.
Well, you need
persons, not just a person to decide. I am willing to help (although my on-and-off grumpiness makes me a troll to some on this forum

) But nobody here will refuse me to moderate non-topics or affronts like you are referring to.
I have nothing else to do and the senior forum persons trust me but many times do not agree with me.

Your complaint is correct. I suggest to take it up with a moderator in private, as Sven suggested. I have underlined the critical part of your complaint. I have two daughters and a wife so I see your concern.