Could mean three things, be my guest on telling which would be the most plausible theory out of all of them!
1. Steve Jobs or someone from the Apple Executive Board (or maybe even the whole executive/founding fathers of Apple) were Satoshi Nakamoto, and had created the project for the sole purpose of not only creating a payment channel/system that would traverse seas and continents, but to also beta test Apple Pay which is their strongest suit in creating the Apple Ecosystem
2. Could've been a good sign that they are in close connection with Bitcoin's creator, or that they are on the same side in the discussion between bitcoin and fiat or whatever the hell, which could also mean they've stocked up on bitcoins without us ever knowing.
3. Just a random and funny easter egg that a high-tier apple employee left on the MacOS systems to not only act as some sort of "where's waldo" on the code but to fuck with the bitcoin visionaries brain into thinking that Apple supports bitcoin, thus having them buy more apple devices, supporting apple projects and startups, and be Apple's unsung heroes.
I don’t think it’s number 1, Steve Jobs or his partners cannot be Satoshi Nakamoto, there is a clear distinction in their beliefs. I believe Satoshi is a liberal and apple founders are capitalists, also Craig Wright would sue them for impersonation if he hears of this lol.
I also don’t think it’s number 3 because apple doesn’t need do all that to get more loyal customers. I think people buy apple products as luxury items.
In my opinion, number 2 is the closest, there were rumors last year that
apple bought 2.5 billion worth of bitcoin but there was never an official statement from the company.