- Whatever is shipped has to satisfy corporate policy.
- The GPLv3 does not do so.
That’s what matters. The only way what you care about has any impact on the above is if there is a meaningful impact for Apple for following the policy, and Apple suffering some sort of loss (be it monetary, PR, legal etc).
Thus far, the non-presence of GPLv3 software does not appear to have hit that bar.
Of course I'm important in this context. The context is literally me talking about issues that _I_ find with macos. Saying 'company X does Y because company X's policy is do to Y' is a useless truism that adds nothing to the conversation.
Apple can be fine with whatever they want and choose whatever principles they want. Doesn't mean it leads to good software or that I need to like it.