I'll add to this.

from the MOTD:

─── - some simple rules:
─── - -> no cloning
─── - -> no spamming
─── - -> no flooding
─── - -> do not harass other users
─── -
─── - we reserve the right to deny service to anyone
─── - at any time for any reason.
─── -
─── - thank you for using unix.chat, and have a pleasant stay.
─── End of /MOTD command.

I'd say threats of "nullrouting" the network fall under harassment. It fits the legal definition of the term and if not there's still that bit about denying service for any reason.

I'll consider removing the bans after an apology.

However, you shouldn't apologize to me but rather the other users of the network.