Linux

There's only so much that can be done on the hardware/ firmware side, but his for me is the real gap that Linux can improve upon. Hibernate, disk encryption and secure boot/tpm unlock together have just worked for a long time on Mac and Windows.

The kernel decisions seem hostile and hard code a big assumption that it's always unsecure to restore from hibernate automatically. What's more insecure is having to disable disk encryption entirely. Secure boot is often misunderstood, but for all its flaws it is better than nothing, and your average user does not want to manually enter a decryption key on top of their user login all the time.

Because of this I feel a lot of software is not written and tested with hibernate in mind, so you also roll the dice on what works and what doesn't when restoring today.

Sleep for 1 hour and then auto hibernate after, in a working setup, meant this problem was solved - always enough battery to resume doing work, no user decision required, quick wake up if resuming a recent session.

I'd love to see multi-user switch selectively suspending user processes and writing them to disk, so you can quickly restore state between users, and if one user left a browser or game running it's not draining the battery on what are now known background tasks. No OS does this one well today.

full shutdown and subsequent boot up on my current Bazzite setup takes less time than hibernate

maybe, but a full shutdown and reboot does not restore all your apps, open documents, terminals etc exactly as they were.

There's some combination of circumstances which prevents it. I think specifically it's encrypted swap, a kernel setting and maybe something else... I can't remember, except that when I looked at it I couldn't be fucked trying to get it sorted.