People can and will discuss such matters, whether Blizzard deems that it is within the rules or not. You may not like it, but word of mouth is a thing, reputation is a thing; and that is why Blizzard adopted said rules to try and mitigate it.
That being said, if you think some successful Guild Leader who mans a guild of 200ish players gets banned and it turns out to be for the wrong reasons? Especially if the fellow is innocent, I’ll level. There isn’t anything Blizzard can do or say that’s going to stop him from showing screenshots of a suspension or ban to his guild mates and discussing it on Discord, Reddit, Twitter etc. If you think that a small blurb of typed words will silence such people, you are gravely mistaken.
In that scenario Blizzard would be wise to correct those issues, or understand that they run the peril of losing far more than one account, but hundreds and sometimes their ‘alt’ accounts as well. That is a lot of money. If you think such guilds don’t leave the game over such matters? Again you are mistaken. They do. I’ve seen five do it over the years.
Look at the whole CRZ situation from MoP. It’s STILL discussed and pops up from time to time from people when the subject of sharding or empty zones comes up, and it is NEVER in a good light. Bad press is bad press. That in spite of Blizzard’s repeated efforts to kill dialogue on it.
The fact is, this happens all the time when bad or truly obtuse moderation decisions are made. Please also note I am not saying this was such a scenario. It was not. The fact however is that people can and will sometimes engage in illogical or prohibited actions, especially when or if they feel they were wronged; or they believe they are in the right.
The question we really should broach, given this thread’s length is whether Blizzard wants that Discussion in a place they can officially observe and add in corrections to inaccuracies, or whether they want to drive it to places they have no control to moderate; and let people’s worst fears be assuaged. Personally I’d choose the former were I them.
I think the only thing that is non productive atm is posting the rules in a effort to kill the thread / silence any and all dialogue with a scare tactics. Report it to a moderator and let them close it, or just don’t read the thread. That’s what I tend to do when it deals with scenarios like this.