There is no blame - this seems like a simple procedural approach you don't have to get emotional about. DTR default is for people not to see E-chat, just don't include those who were added who shouldn't have been.
Reminds me when we setup achievement+bragging channel and instantly our enemies would post brags of killing us - so we just changed it to lawful achievements in [RM], problem solved. Same with echats when we minded other side pinging in another discord - we just said you can only ping when you play our side, pm leaders if you want to arrange a fight.
