isn't it a damned if you do, damned if you don't scenario.
The old screws would cause vibration problems if the torque wasn't right. If the torque was too much you've broken a window anyway. It's still no fun changing the old windsheilds. A mistake on the design and with regards to the adhesive used is likely being rectified as we speak. All it'll take is a suitably strong adhesive that allows flexing to some degree. Or a strip design to sandwich the glass with proseal, much like how many windows are held in place now. A step forward in a design that was to allow more stiffness, and more streamlining and better sealing isn't working in canada's climate, but it's not the end of the world.
But I guess the positives of the new aircraft (ie Dual hyd) far outweigh the possibility of a window cracking.