It might be interesting to also disable LED notifications if Do Not Disturb is enabled. Or perhaps add another option to let the user decide.
While it would be consistent, i also can’t see how it matters. Not actively looking at the phone is easy enough… (Not listening to or feeling it might be slightly harder) What is your use-case or motivation?
Mainly not being pulled in and especially not being interrupted
I’m well aware that turning the screen over is enough to keep it out of my line of sight, and I think I’ll get into the habit quicker than waiting for this feature to be added.
Still, it’s worth debating whether this feature is worthwhile. To keep the function Do Not Disturb coherent, I think it makes sense to disable LED notifications too.