How Do I Hide Past Usernames?

When I post in the chat, I can see mine as well as others' previous usernames, is there a way to hide the game from showing my past usernames? My first Minecraft username has my irl first name which I don't want to be *too* publicly shown. I also recently changed my username a third time from Fruits_Veggies to PolyArchy but it's only showing my first username.

 

you don't, you could post it as a suggestion to let the see past names feature be togglable