Minecraft Bedrock Windows 10 Any Username

It has occured to me while using Minecraft Windows 10 bedrock edition that most servers basically save your data and stuff based on your xbox username i rember there use to be a glitch that allowed you to change your username while signed in i wanted to know if theres a possible glitch just like that one or a possible exploit that allows you to change your username working because then basically you would be able to even obtain op powers of a server with it. If anyone could find something working like this i would appreicate it alot thanks for checking out my thread.


The Old Glitch

I managed to get a username stick but I'd assume that the UUID will still be that of your usernames when joining servers. So you cant just join with an owners name and steal there server. Might look into a UUID spoofer to go along with this.