Launcher prints and shows file paths and username durring startup.

Minecraft launcher displays startup, on the bootstrap screen. This is a problem because I try to be anonymous online, and I screen recored, so it is risky for me to launch minecraft.

The main messegest this applies to:

Reversing LZMA on C:\Users\UNAMEHERE\AppData\Roaming\.minecraft\launcher.pack.lzma to C:\Users\UNAMEHERE\AppData\Roaming\.minecraft\launcher.pack
Unpacking C:\Users\UNAMEHERE\AppData\Roaming\.minecraft\launcher.pack to C:\Users\UNAMEHERE\AppData\Roaming\.minecraft\launcher.jar
Cleaning up C:\Users\UNAMEHERE\AppData\Roaming\.minecraft\launcher.pack

(Username removed, but you get the point)
The optimal fix would be to replace the full path with "%appdata%", which is (or should be) the same.

These messages also appear when the game crashes, so if it crashes on me, I have to trash the recording.