[mort96]

The huge advantage of x86_64 isn't that it's a stable platform, but that the big hardware vendors maintain their own Linux driver. Nobody needs to reverse engineer how AMD GPUs work, you can just use AMD's driver. Nobody needs to reverse engineer how Intel power states work, just use Intel's pstate driver. Nobody needs to reverse engineer how Broadcom's WiFi driver works, Broadcom maintains their own Linux driver and contributes to the upstream brcm80211 driver. And commodity hardware that's not directly supported by the vendor typically has detailed data sheets, meaning that someone has to contribute a driver but no reverse engineering is needed.

[StillBored]

Its more than that, its that x86 vendors know how to maintain hardware backwards compatibility, they don't throw out the entire USB subsystem every time a new phy/whatever shows up because there is a standardized mailbox interface sitting in front of the actual HW. Same with the core platform, which works out of the box using 25+ year old firmware standards that are flexible enough to support simple sensors and behaviors, like lid close notification on a laptop for example across multiple OS's. Even something as simple as the firmware interface for handing off a frame buffer to the OS isn't universally support on arm platforms because a significant fraction don't support uefi. Apple was an early uefi adopter, but whatever internal politics they have, means they tossed even that on the latest mac's.