That’s the point. A = B is frequently not true “orange is the new black”, “Kier Starmer is a fascist” (sci-fi writer Charlie Stross), etc. General semantics practitioners would frequently reject A = A (e.g. me as of today and me as of tomorrow are not quite the same) See

https://en.wikipedia.org/wiki/The_World_of_Null-A

In your case, people get terribly confused about things like threads, fibers, processes, continuations, coroutine and all these other mechanisms that are frequently used by the OS and libraries to cover up interrupts. As there is a lot of confusion, equations that are not 100% true are part of the problem and not the solution, at least that’s my hot take.

(I imagine feeling exhausted when I imagine rewriting that comment in E-Prime, however!)