Well, the "YT" incident was caused by the roblox safe chat, which is a special system that is not controlled by roblox. So on tiktok, YT, means something racist, and you could see why. Then the safechat system banned people with YT in they name. (They didn't ban all the people just a couple of them.) and then when they got unbanned, their roblox usernames were changed to a randomly generated name.
Caption this Meme