Like the girl in the taco shell commercial said "Why not both?" Use both an AMD and Intel chips in new Macs. Use the ARM chip as a co-processor to run iOS apps on the Mac. This would make it easier to develop iOS apps on a Mac. Also it would foil the Hackintosh crowd because PC Clones don't have ARM chips in them.
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You don’t need ARM to run iOS apps. All iOS apps started life running on x86. When running on the iOS simulator, iOS apps are compiled for x86 and linked to x86 versions of the iOS frameworks.
The T2 boot security chip (which is ARM and has all of the standard iOS (renamed BridgeOS) security features) which is presently shipping in most/all Macs will be able to foil Hackintoshes just as soon as the installed base is sufficient that a new macOS release can demand an attestation from it to boot.
The Air and mini just got an update that brings the T2. I’m not sure if they are still shipping any non-T2 Macs, I don’t think they are.
The iMac is still shipping without the T2. I was last updated in 2019, so it's not a zombie by any stretch.
Ahh yes; I have an iMac Pro (IIRC the first one to get it) and forgot they hadn’t T2’d the silver ones yet.