Catalina disable onscreen volume/brightness indicator Touchbar MBP

[Schranke]

Hi all
So just updated to Catalina after GM went PB. And so far I have installed and set up everything to match my old High Sierra,
But I have one problem, I can't get my disabling of the onscreen volume/brightness to stick.
Here is the approach I use

Enable/disable volume/screen brightness icons - Single user

1. Boot into recover OS (CMD+R) -> terminal
2. 
   

   csrutil Status

   
   If enable - disable
   

   csrutil Disable

3. Reboot
4. In MacOS -> terminal
   

   launchctl unload -wF /System/Library/LaunchAgents/com.apple.OSDUIHelper.plist

5. Reboot into recovery OS -> Terminal
6. Step 2 but enable instead of disable
   

   csrutil Enable

7. Reboot
8. Done

To undo changes follow steps, change “unload” to “load” in step 4

Any one who have done this and can get it to stick without leaving csrutil disable?

Bonus info, restarting with csrutil disabled still keeps the change.

 

[Schranke]

Okay I figured out why I doesn't work... the new read only system volume...
Well hope a workaround will be found