Seriously. Take a look at the foldable touchscreen phones that do exist. "Because" is the only answer.

And if you’re going to ask why a bigger screen? It’s the same reason your laptop or desktop isn’t 7” wide.

Sorry, how is applying less force more dangerous?

(in general, wish the force meters would be widespread so that iFixit kit just had a monitor with a number and a beeper once you reach the needed force level)