The downside of relying on translation layers rather than porting from the perspective of Apple is likely that they vey much detest the lack of control that would result from that. Game devs targeting Linux have started viewing Proton/Windows runtime as a target, which has lead to native Linux ports becoming less common. As a person wanting to play the odd game on Linux, this has been a godsend, but for Apple, this would be viewed as an existential threat.

Personally, I'd wish for more extensive Vulkan support, but I have been informed that this is likely not as easily done considering Apples GPUs with TBDR differ somewhat from the industry standard.

At the end though, if Apple truly wanted, they could simply spent money on studios and incentives ports. None-Mobile-Gaming remains no priority for them, simple as that. I haven't seen any indication that the AVP has changed that in any way and I wouldn't be surprised if they view GoDot not as a game engine, but rather another way to create experiences.