I think CoC has a significant shortcoming.
It has the same rules for very different things.
There are
- synchronous \ asynchronous communication(chat\forum)
- local\global(team\corporate) group
For example chat has hard disadvantage(if it works correctly and everybody are reading its message immediately):
Every message breaks concentration.
If someone is working on really hard task, 8 message per day can significantly decrease his performance.
Why should some team have to allow such performance degradation?
For example we have very hard requirement on our corporate chat.
We use it for:
- send really important alert
- find people
- organize local\private chat
Furthermore we have strong limit on private chat:
If you are not able to make decision within 3 message you should switch to voice conversation(skype, telephone, etc)
Of course we have team\rooms chats without such rules we are not robots 
It seems that misunderstanding occurs when people do not understand, why someone can make some joke\critics\news while other can not make it in the chat.
The CoC says we all equals. But it is a lie and it is a life
An external man is not equal with team member even if he really wants to be equal with one .
Equality can be achieved only with same qualifications or works.
Whether you’re a regular contributor or a newcomer, we care about making this community a welcoming and safe place for you and we’ve got your back.
So there is confrontation.
- one side: You distracting me from my work, are you Steve Jobs
- on other side: You declare equality, so why do you break your declaration
I think such confrontation can be reduced if we add more clear requirements to members and message of the chat.