I use my screen in all possible positions when I do things and/ or when I wanna show something to someone else.

Privacy screen protectors ruin the colours and viewing angles.

It's like having a TN panel on your phone. Reminds me of my old LG phone from 2011.

accidentally ordered

for other people yeah, but i guess we don’t realize how much we use our phone without directly looking at it, i imagine sometimes while i’m laying down and quickly checking it, it might be at an angle, or if i have it flat on the desk and i’m just trying to read the screen, it would probably be at too much of angle to see it

Maybe they could put it in the keyboard

I think that's because the display sides of those aren't thick enough for Face ID.

Yes it is. This is 100% the reason. There’s nowhere near enough surface area to get a unique finger print.

Face ID on Macs faces multiple problems:

1. Hardware: The components required are thicker than the display side of a MacBook. Someone commented about the Studio Display (and likewise the iMac), but that's enabling Face ID just for a fraction of Macs (and could potentially limit future design).
2. Requires additional physical input anyway: On the iPhone, you swipe up to unlock. The Mac could just accept the spacebar as input, but it's still a secondary action meaning Face ID is "press here instead of touch there". It also means that for Apple Pay or anything else requiring confirmation, you'd need someway of confirming (click here instead of touch there).
3. It's not solving the problem that the iPone had: Face ID on the iPhone enabled the iPhone to get rid of the Home button which greatly increased the amount of the display area. It wouldn't do that on the Mac. Really the only thing it's doing is allowing some other physical action (press the space bar or click a confirmation button) instead of touching the power button.

Phones with power button fingerprint, short-focus, ultra thin optical or Supersonic under screen detectors existed for a long time. Or they could punch a hole on the display and call it dynamic home.

Works great until you have a work machine that you can’t and shouldn’t associate with your personal AppleID.

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In order to use Watch unlock, the targent Mac and the Watch have to be associates with the same Apple ID, and you should absolutely not be associating your employer owned device with your personal Apple ID.

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Amazes me Apple hasn't carved out a fix for this.

Sounds like a great way to allow people to unlock your Mac while you're asleep

Yes - Mac User with a bag of Doritos

Apple could let you type in your eye prescription and make the screen automatically adjust when it detects you're not wearing glasses.

I remember a university project from about 10 years ago, that managed to do exactly that, optical problems notwithstanding. I always hoped it would find its way into the marketplace. But it hasn‘t happened yet. It seems they needed to add an extra layer on top that diminished the screen quality quite a bit. If I could only find that link.