I download and test this ISO file.
It boot OK in legacy BIOS mode, but in UEFI mode it report Error loading \EFI\archiso\vmlinuz.efi: Unsupported
I test this ISO file directly with a VM(VMware&VirtualBox) and boot it in UEFI mode, it also report the same error.
So I think the ISO file itself has some problem in UEFI, it can't boot in UEFI mode as an ISO file.
It boot OK in legacy BIOS mode, but in UEFI mode it report Error loading \EFI\archiso\vmlinuz.efi: Unsupported
I test this ISO file directly with a VM(VMware&VirtualBox) and boot it in UEFI mode, it also report the same error.
So I think the ISO file itself has some problem in UEFI, it can't boot in UEFI mode as an ISO file.