But that's not relevant? What would be relevant if, depending on where your bits are stored, acces time is significantly slower. If, regardless of where my data goes, my access time is constant then I do not care as a dev?

That's the abstraction I'm working with when coding. Which is necessary because in most cases this should be an implementation detail.

Really not caring about something also means not making a positive and false claim about it. What I said was relevant to that claim. That claim in turn was, according to your heuristics, not relevant (for daily coding).