You are seeing a problem that doesn't exist.
A piece of protective equipment that doesn't properly cover the areas it's meant to protect for whatever reason is a problem. Would you want them going into combat like that?
Not all them wear the vests low, as seen below:
Yes, I've noticed that.
Moreover, they could easily mount the folio higher by adding a simple "accordion spine" to the folio (as seen below). This spine design allows a book or folio to 'stretch' open much wider or, in our case, allows the smart device to drop to a comfortable height for ease of operation.
That could be a possible solution, but as it stands, there's no evidence that they've introduced anything like that.
I think I should have elaborated in my orignal post. While initially I assumed it was mostly a flaw with the design of the vest itself, images of it being worn properly and evidence of the ability to adjust the vest lead me to abandon that theory. I've also noticed in almost every instance I've seen it being worn that exaggeratedly low, the device has been attached.
Along with the magazine pouches limiting how low it can be attached, and the absence of your mentioned "accordion spine", it seems to me that the most plausible explanation for why the vest has been worn so low is to allow for more comfortable use of the device.
That sounds like a much more reasonable of an explanation imo than the designers deciding to make the only the desert patterned vests hang extremely low, or every single member of that elite formation apparently not understanding what their body armor is supposed to protect.
I don’t think it’s worn low, it just has a low cut.
They all seem to be the same vest to me if that's what you meant.
Or see by78's post:
Not all them wear the vests low, as seen below:
I suspect the vests are adjustable, as seen from the back. Notice the shoulder straps sort of flaps over the back. I'd be surprised if they are non-adjustable.