> Complete control over my visual environment is like using noise-canceling headphones for my eyes.
Could not agree more. I tried out a much simpler setup on my friend's Oculus Go (predecessor to the Quest 2, since abandoned by Facebook), and was amazed at how well I was able to focus.
For my setup, I used the a web browser on the headset itself to connect to ttyd [0] running on my computer for doing programming homework when I was in college, and it worked really well. I wrote about my experience, and drew similar conclusions. [1]
When I looked into immersive coding environments at that time, I didn't find much. I guess I didn't look hard enough...
[0] https://github.com/tsl0922/ttyd
[1] https://jstrieb.github.io/posts/vr-programming/