This is utterly irrelevant. I don't know what point you're trying to make.
It remains objectively inarguable that Apple does not have a platform monopoly on (ARM-compatible) smartphones the way Microsoft did on ("Intel-compatible") PCs.
Are Apple's phones compatible with other ARM smartphones? Can you install Android or LineageOS on one, or install Android apps on iOS, or get iOS apps through Google Play or the Epic Games store?
It seems extremely relevant to the market definition that the alleged alternatives aren't actually substitutes for one another.
If you have a car that runs on diesel fuel and there is only one company that sells diesel fuel, it seems like you want to claim that it's irrelevant and isn't a monopoly because there is another company of the same size that sells gasoline. Is it not relevant that you can't actually use that in your car?
I don't understand why you need to be so dishonest about this. It remains the objective and inarguable fact that Apple does not have a monopoly here. Period. End of story. It simply isn't true.
Whether their behavior is otherwise anticompetitive is a different issue. You are intentionally conflating them and it is morally repugnant for you to continue doing so.
It remains objectively inarguable that Apple does not have a platform monopoly on (ARM-compatible) smartphones the way Microsoft did on ("Intel-compatible") PCs.