You think anticheat will stop this? lol

My keyboard has macros. No PC software required except to create/modify.

With little effort you can also turn a raspberry pi into a programmable input device. There are also HDMI to USB dongles that capture video if you need to capture/process frames. I own one.

All Riot is doing is making the cheats (if they even exist for LoL) stealthier.

This has nothing to do with cheating. They got tired of support requests coming in. If that wasn’t the case they would have had a solution for Steam Deck/Linux users to go with the announcement.