Get the chat logger addon.
oh yeah the fact that the BLF automatically assume stuff based on their friendships and such is also dumb tbh
No it is not, it is based on person's past. The images show that you are being an ass calling him unnecessary names. This "assumption" is not it, those images show how rude you are - I am sure the ban was not just towards him for the cause.
Oh and saying "well there is no rule" about what happened here is common sense, does not need to be a rule on that.
You never provided images in the first place so of course no one is going to attempt to believe you. Does not make sense to crash after disconnecting. If anything at least get a chat logger.