Is AUTHOR wrong in the post ? POST : Throwaway account for obvious reasons.

Context:

My family grew up very racist, sexist and religious. My parents hold these traits and my siblings adopted it too. For context I'm 28 and my brother is 27. Growing up I had all these beliefs too but over the last few years I decided that I don't want this hatred to be who I am and decided to change.  Now my family casually throws around racist remarks like it's nothing. My brother has even gone so far as to drop the N bomb multiple times over voice chat in video games or whispers just to try to piss people off. For context he's say stuff like "Fuck you N****, you fucking suck and I hope you kill yourself" and so on.

At first I didn't really do anything about this because I always thought that's just the way they are. The more I changed however the more this bothered me. I'm no longer racist and to be honest the idea of being racist disgusts me these days, especially after reading about hate crimes like what's happened in new Zealand.

What happened:

Recently in discord my brother has been dropping the N bomb even more because I asked him to stop. He que'd his mic and just said the word over and over again for a full minute at least, since then I've asked him to stop at least another 5 times. 

Yesterday I posted in our discord of family and friends (it's a pretty big discord 200+?) that I won't deal with this type of racism anymore and if he doesn't stop I'll simply be leaving. He responded with "I do what I want", so I left. In the process of doing so I ended up feeling pretty well and decided to message him saying that I'm actually not just leaving the discord, I'm done with him until he grows out of this. I think it's too toxic a mindset to be around, let alone my kids being around it in any way.

Now my siblings are telling me I should stop being stupid because that's just the way he is and he's never going to change. I think I have a reasonable request though. Over the last years I have started believing that just because you're family it doesn't mean you are exempt from consequences or being removed from my life. We play a lot of games together and are pretty excited for WoW Classic. We have a fun little lan party planned at my place and my family is telling me that I'm going to ruin this for everyone because now they have to choose and split and it's my choice that's making them do this.

AITA?
