To elaborate on my point about the hinge (all parts of it) being a failure point, I’m not saying this is an issue only related to Samsung. It’s simply a reality of the mechanics of any hinge. And as far as their specific testing goes, no doubt they’ve overbuilt the hinge mechanism itself to take the abuse. But the stretching and compressing of the components within the screen itself cannot be overbuilt as it’s just an issue of material physics. Plastic is plastic and laminations are laminations and the physical stretching and compressing of both results in failures. And I can guarantee you that Samsung didn’t take into account the variability of temperature and moisture content of the environments in which the devices will actually operate, and both issues will have an effect on the components of the screen as well as the hinge components. Again, what I’m talking about here is how a flat slab that doesn’t have to fold will not suffer the same failure points as a foldable device. You can argue I’m wrong, but I’ve got the reality of physics backing me up.
In regards to the idea that consumers wanting and buying larger screened phones equates to a problem where the answer is a device that has both small and large screens on it doesn’t make sense [to me]. They can be completely separate things - I use a Pro Max and do not want it to be bigger. I’m actually more likely to go down in size when I next upgrade, as I personally don’t need my device to act as my only computer and switch to either my iPad Pro 12.9” or my Surface when I need a larger screen. But I understand that I, like you, are single points of use-case examples, so neither are indicative of what the mass population wants or needs.
The other thing I think needs to be pointed out, at least as far as any of the current phone/phablet foldables go, is that it’s not being honest to say that they’re a single device that goes from a small screen to a larger screen. In reality, they’re two devices connected together that share a single internal screen. So you’re really carrying around a device that is two phones thick, in that effort to provide the larger screen.
From a nostalgic point of view, I appreciate the smaller folding devices that are a take on the original Razr. But your trading height of the device for thickness, whereas the originals typically had a super-thin (razor thin) top screen, with the bottom base unit carrying the battery and keyboard, which allowed for a very thin overall device. No one has figured out how to recreate that, given the need for larger batteries and a folding mechanism that isn’t flat.