A warning to one is a warning to all. The server was warned 4 times in a span of about a minute and a half. There were already 2 temp bans when you used the slur. It is on you if break the rules after that point. If people, including you, want to continue to use slurs after all those warnings, then you can but you will face the consequences for said actions.
If you feel something should or shouldn't be allowed in the server, talk to Deofuta.
Anyways this case has been handled so I am done posting in here for now. Post on the day above to be unbanned.