Awesome, I never got around to this.
Extension to hide your opponent's username, rating, title etc. on Chess.com
Have you made a pull request to this from the organization? Would be interesting to see the difference between this chrome extension and a Firefox one already there
https://github.com/SpeedDemonCCXR/Chess.com-Shadow-Mode----Chrome/tree/main follow the instructions in the README. It should work perfectly. If any issues encountered, please tell me.
Note: This extension code has been created and coded by me.
Advantage to the Zen Mode Extension (Which you can also try out and use if you want) is that this extension does NOT hide the notation pane, but it also removes the Start Game Message that Chess.com displays in the chatbox (which has the opponent username, rating, title) at the start of each game.