If that were the case, we’d have almost no HW support on Linux. The Linux kernel doesn’t have a stable API nor ABI which means the only way to get meaningful HW

If that were the case, we’d have almost no HW support on Linux. The Linux kernel doesn’t have a stable API nor ABI which means the only way to get meaningful HW support is to mainline the driver. DKMS helps a bit in “stabilizing” but it has it’s warts.