Why are we still ignoring the Elephant in the room?
Yes, glass is fragile, and can break when impacted in various ways.
That's a given, we know and understand that.
However, that's not REALLY the problem
The problem is the people who make the devices (phones) are not designing them in any ergonomic way.
It's like someone said to Apple or another maker. Ok, we need to set out to make a device that's got zero grip on the surface due to the material used, and also make the body, flat and smooth to make it ever harder to grip.
Let's face it, smooth flat surfaces, made from smooth material with almost no friction, then on top of that, don't put any shock absorbent material around the glass either.
You really could not make it easier to slip out of your hand if you tried.
Again, it's all about the looks than the practicality.
For starters, the edges and back of the device could have a surface that did not slip from your hand.
Then people would jump up and down and say "waaaaaaaaaa It's not aluminium"
Form and style over function, again and again and again
You should be able to place a phone on your flat open hand, told your hand to almost vertical and the phone still won't slide off as the surface material would grip your skin.
Funny world