Has Bitcointalk become an anarchy?
No, it hasn't
This user @nutildah left me a neutral feedback without any evidence and without giving me any chance to respond
You had a chance to defend yourself in that thread but look at what you replied. Honestly, If I have to ask, why did you do what you did in the other thread? The reply was just a summary of the person who replied right before you, which aroused suspicion.
... and your Email address was recently change? Maybe he is on to something.