A circular argument could be made about this.
The Apple TV does not respond to any letter or number codes. Therefore it doesn't matter whether there are letter or number codes.

Or

There are no letter or number codes for the Apple TV. Therefore it doesn't matter whether there are letter or number codes.

Perhaps we can assign a name to a class of codes like this. The codes have these characteristics: each code could, could have, or might, or might have, some use with products other than the products they are associated with. It is not known whether the codes' IR analogs produce any result of any type when a device that normally responds to IR codes is exposed to these.

There being no interest in these codes, and no means of doing anything with them, we shall henceforth refer to them as Schrödinger's codes.

By the way, the so-called Schrödinger's cat idea was not invented to explain a mind-bending result of applied quantum mechanics. Instead, it was invented to point out that some facets of quantum mechanics, at the time the "cat" was invented, were such that the really stupid idea (the cat) was supported by quantum theory.