Are we living in the same world? Nvidia only recently started caring about Linux (due to profit obviously, it turns out servers don't run anything else nowadays).
May I remind you of the famous `--my-next-gpu-wont-be-nvidia` flag in Linux compositor? Meanwhile, apple literally went out of their way to make secure boot for third-party OSs possible.
Conversely, Nvidia provides first-party Linux support for most of the hardware they sell, and Apple goes out of their way to make booting third-party OSes on the majority of hardware they sell (read: all non-Mac devices) all but impossible.
May I remind you of the famous `--my-next-gpu-wont-be-nvidia` flag in Linux compositor? Meanwhile, apple literally went out of their way to make secure boot for third-party OSs possible.