Ironically, osu! had it's own built-in spyware until 2016, automatically uploading window and process names as well as manual commands to take full monitor screenshots in the name of preventing cheaters (both software-wise e.g Cheat Engine.exe is running, and sharing/boosting accounts, by checking if someone is logged into the same Skype account).

Indeed, the osu! community wrote their own drivers for Wacom and many other drawing tablets: https://github.com/OpenTabletDriver/OpenTabletDriver

They're much more configurable than Wacoms proprietary drivers and also telemetry-free. It's so widely used that they've even been directly integrated into the new osu! lazer client.