I own a Galaxy Book 1 360
My son has the Galaxy Book 1 and my Wife the Book S along with our Razers, MB and Surface laptops
What physics ? many things are designed to flex LOL
I always recall the 747 wing is designed to flex 34ft which is quite amazing
There was a great deal of misconception on rigidity eg on 4x4 vehicals people thought they were safer in a more ridged and strong vehicle until crash tests and crumple zones showed different
Perceptions a bit like postings on social media and forums they are often very subjective. Whilst I sympathize with the users posting above you can read the same thing about most OEM's screens, crap happens