Yes, we're all aware of chargebacks, and nobody is disputing that you would owe Apple in that situation. Not sure how this really helps the argument.
The issue here is that the Apple Card seems to completely obliterate any separation between the merchant and the bank, which is obviously problematic. In fact there are 3 different things that you would expect to have some separation: the hardware (MacBook Pro), the services (iCloud), and the credit card. But now all 3 are the same, so buying the hardware with the credit card causes the service to be shut down.
Whereas if the hardware were Dell, the service was Google, and the credit card was Chase, then this problem wouldn't exist, and it would merely be an issue between Chase and the card holder, not affecting the Google services at all.