Christ, three quotes, alright I'm game.
I understand that even if I don't like something in the rules, I'd have to suck it up like anyone else, rules are rules. I agree with the separation between morals and rules anyways, for the most part.
I think a situation involving someone actually screaming "REEEE" is not a perfect situation in the first place, the issue is that not only is it a bad situation, it's an imaginary one which gives it less credit than it already had. Also the extremes of a spectrum are rarely your only option, you don't need to have either a fluffy space with no clashing between characters or a barbaric hellhole full of racism, you can always have some forms of it be okay
-Let's not define racism and instead use the actual definition(s)
"prejudice, discrimination, or antagonism directed against someone of a different race based on the belief that one's own race is superior."
"the belief that all members of each race possess characteristics, abilities, or qualities specific to that race, especially so as to distinguish it as inferior or superior to another race or races."
therefore by these previously established definitions we see that yes, what you've said before is racist, however does it break the rules is up to the decision on the racism rule and just how much leniency is applied.
-Let's not slide down a slippery slope here where somehow disallowing racism will ruin the server, gender pronouns are not mentioned in any rules, delta is not a race and is not mentioned in any rules, PFCs are not a race and are not mentioned as one in any of the rules. These aren't very practical arguments, they're stereotypes taken to the extreme rather than discussing reasonably what should be done with the racism rule, clearly people are not going to be banned for the reasons you've given as I doubt the rules are going to be set that way, just like I doubt they're going to fully allow people being outright assholes 100% of the time.
-Free speech means nothing here, free speech is a rule applied to the government so you don't get punished when you upset them, private games and hubs can set whatever rules they want, as shown by how many people have been banned for exercising their right to say OOC in IC.
-Your youtube video cited as evidence has changed me, as I'm sure it changed all other 582 people who watched it, it's incredible to see such other brilliance come from the mind of this man in the forms of videos such as "gay kid" or "my mailman tried breaking into my house" or even "fortnite the montage". Jokes aside I really don't see how a video where the guy talks about his opinion without any opposing opinions is supposed to be treated as hard proof for free use of the n word.