Would be a trivial way of pretending the user is active and preventing sleep, useful for miners or ensuring the device is accessible when the attacker is online

Would be a trivial way of pretending the user is active and preventing sleep, useful for miners or ensuring the device is accessible when the attacker is online. However, Apple has made substantial changes to how it handles hardware and system-level extensions, and I doubt this would be possible without exploiting either the OS or existing software on the system. It would require a sysadmin to install, as the approval process requires accessibility access.