The silence is a warning, so yes, after that initial silence it is rare to receive another one.
The point of the penalty system is to deter additional violations, if a week silence doesn’t do it, then as I mentioned, it upgrades to a suspension, which multiples for additional penalties.
Agreed, I don’t see any in the reported chat, but our policies prohibit both inappropriate and toxic language and behaviors.
It is also more than just saying “stupid”, which isn’t the only reason. Granted, repeatedly calling someone a stupid lizard in all caps multiple times isn’t productive, but we tend to look at an overall behavior. So add to that spamming “Help FC” a dozen+ times as well as other messages, it can earn a penalty.
If you wish to appeal you’ll want to submit a ticket, that is the only means of appealing these actions.