My experience with ACPI is limited to tinkering with it a bit for installing macOS on unsupported systems, but shouldn't it be possible to avoid any physical modification and do the same with an SSDT that disables the power to the kill switch?
(What may actually be happening is that they switch is telling the embedded controller to toggle the WiFi card pin, in which case modifying the EC firmware might let you achieve the desired outcome, but that's still not an ACPI hack)