Airlines all over the world are changing how they do engineering and we're not seeing a flood of planes dropping out of the sky.
It's really comforting to NOT have aircraft falling out of the sky and it's a testimony to the ingenuity of the designers of today's large wide bodied aircraft that have the built in redundancy and safety that we need.
These aircraft are very forgiving in what can happen to them before they finally "drop out of the sky"
Pilots and engineers can make mistakes and and these aircraft will still operate albeit sometimes beyond their design limitations. But with inadequate maintenance or pilot skill, eventually it won't be enough.
The cause of a crash may be just a minor weakness in design not envisaged by the designer, a simple failure to remove static port protective covers or lack of experience by ground staff failing to identify a serious problem that is catastrophic in flight.
The probabilities of such an event just increase when good practices in maintenance decrease and so therefore risk also increases.
There cannot be ANY good reason, business or otherwise to increase risk at any time by an operator or MRO.