I see a lot of people saying "It's not that big a deal" or something of a sort. Keep in mind that Minecraft's main demographic is children, many in which who come to Cube because it's a family-friendly community. Toxic behaviour is a big deal to them.
I agree with that. But then shouldn't the argument be that warnings aren't required for any swearing in game, whether targeted or not.
No need to remove the ability to chat, when they could just deal with the rule breakers instead.