"users wouldn't need to know what a USB port is, if the design was self-evident."

"I don't think reasoning like "must" (or "never") pushes innovation and great design"

So "never" getting to know what a USB port is for, "must" be the result of great design ? It "must" be, but that would be bad... by you own stunted definitions. But do keep moving the goal posts around.

In the end you just produce a lot of forced substitutive declarations, like the concepts of innovation and great design that you use. You seem to void them in the process.

They will always be "better" solely because they are used by you, no matter the paradox and bs level needed to try to justify something that isn't even real.