Musk is wrong that input bandwidth is a limiting factor in intelligence. We don't efficiently use the megapixel our phones show us, let alone the several megapixels on our laptops. Improving UIs will provide much more bang for the buck for many many decades to come. A neural lace is the equivalent of trying to increase the yield per square inch of the herbs in your window box when you have 100 acres of empty land aro…
Imagine thinking about something and having it appear on your brain interface HUD vs typing a google search on your phone and reading it from the screen. How is that not a bandwidth problem?
The fact that you have control over your attention... you can direct it to arbitrary things you could do or feel with an orange... that gives you the subjective impression of seeing the whole thing all at once, but that's just a lie your brain tells you. You only actually experience tiny vignettes.
You imagine your experience of "orange" is this massive huge bandwidth cognitive experience, but you only really need a handful of neurons to maintain a weak signal signifying orange.
A crude drawing of an orange in an app can trigger exactly those same neurons. As long as your mind is busy with other things, you won't even notice the difference. This is why novels work. And it's why comics work. "Understanding Comics" by Scott McCloud does a great job of showing how abstract representations of things can provide richer experiences than realistic ones.
Of course, if you direct your attention to the differences between the crude drawing and a "real" orange, you can interrogate those differences. But the fact that you can explore a rich representation of an orange in your brain doesn't mean that you do when you experience one in daily use.