alt Hacker NewsMacOS has no problem with hibernation because hardware and software are designed together: it uses TPM to manage swap encryption. I assume "BIOS" is also optimized to enable fast boot on sleep.
Linux can work with TPM but it's never as smooth. (Unless I guess you make it custom for your specific setup.)
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I have FDE with keys in the TPM. It's pretty smooth bit required a one time additional step in Fedora. It's also probably not very secure, but my threat model is simple theft.
Windows has no problem with hibernation and FDE and it uses a swap file.
Windows and Linux run on the exact same hardware. Windows hibernation doesn't rely on secret bios features.
Unreliable hibernation is 100% and undeniably a Linux problem, there is no secret advantage or conspiracy to keep it down. It's just that nobody cares enough to make Linux not suck.
These days with cryptenroll and friends, using the TPM is hardly an issue anymore. LVM and swapfiles both work well if you just create one large "everything but EFI" encrypted volume.
You'd need to keep secure boot on, preferably with your own keys loaded, to get all of the benefits, and that's a bit harder to automate.
Windows does all of this and more. It's harder on Linux because of a lack of tooling/interest/business incentives, and because on average Linux users want more control over their hardware than Windows users.