Install and restore IPSW iOS/iPadOS/macOS on UTM through ARM emulation

UTM is a fork based on QEMU Emulator, QEMU Emulator can emulate many diffrent processors architctures including ARM64 on x86_64, I really would like to see ability to install and restore IPSW of iOS/iPadOS/macOS on UTM on Intel-based devices, I really want to try iOS/iPadOS or at least arm macOS (Which definitely can run iOS/iPadOS apps as Apple announced) not to save money but, to decide before I buy iPhone/iPadOS if they worth buying.
Why can macOS (12.3+) be installed on UTM only for Apple Silicon Macs while I can't do that on Intel-based Macs? No IPWS macOS Restore option for Intel-based Macs. UTM is based on a QEMU emulator that can emulate the ARM64 architecture as I mentioned and on top of all that there is a developer who managed to run iPhone 11 firmware iOS 12 up to iOS 15 on a QEMU emulator, I hope to see that in the future if it's not impossible to do.

Here is the proof for the developer who managed to run iOS on QEMU Emulator: https://twitter.com/ntrung03/status/1499274938217381890