Being out of focus is what we SEE as out of focus, and isn't causing stars to appear to constantly move and change shape, that is complete nonsense.
The problem is you appear to, going by your responses, to know very little about either cameras or telescopes or how they work. Your obvious confusion could easily be rectified by you taking a look through a properly set up astronomical telescope or reading about how to take photographs of the stars. If you had a mind to discover the real truth of the matter you could be put right in moments and discover just how wrong you have been.
Here is a guy who takes photographs of the night sky from his back yard.
https://www.dailymail.co.uk/sciencetech/article-10603357/Astronomer-captures-photos-distant-nebulas-telescope-East-Ayrshire-garden.html
Thats how stars actually look when set up properly, not when viewed through a shaky out of focus camera.
Prove that any 'out of focus' camera could ever make each star look and move differently from one another, with ANY light seen in the distance on Earth, or any airplane lights above Earth, at any distance you choose.
They've kept on telling, over and over again, that the stars 'appear to twinkle', due to our 'atmosphere', so why wouldn't they tell us that when magnified through a telescope, stars appear to move and have unique shapes, due to our 'atmosphere', too?
They never said stars would appear like that, from an 'out of focus camera', either!
No, they just kept telling us that's why stars appear to 'twinkle'! I suppose they all 'forgot' to mention all these incredible 'effects' of the stars, caused by our atmosphere, over these centuries! Good one!
You appear to not understand the difference between being out-of-focus and being beyond the resolution limit of a lens.
If something (like a star) is far enough away that its image on the image-sensing device (film or digital array or, in the case of your eye, the retina) is smaller than the resolving power of the imaging lens, the image will not even resemble the star even though the system is accurately focused on the star.
In such a case, what you see is a tiny spot of light that is essentially the Airy Disk of the lens (look it up). And yes it visually "twinkles" because of atmospheric distortions.
It's basic optics. I know it could be hard for you.