Planes have stalled and crashed since planes are flying. Many many times.
Among these are now also 2 recent instances where Airbus have stalled and crashed. To attribute these accidents to non-moving TL or to not-connected sidesticks is an absolute red herring.
Moving TL and connected yokes didn't prevent Amsterdam, nor did they prevent San Francisco. There is however reason beyond reasonable doubt that Amsterdam (thanks to mode selection integrated in the TL and autotrim) and San Francisco (thanks to alpha-floor) wouldn't have happened in an Airbus.
Our industriy continues to see weird accidents from a basic flying skill point of view. We seem to have many crew flying around the world airspaces who just do not have the basic skills necessary to actually hold a seat in a jetliner cockpit. This is not a problem of these pilots, but of the environment which lets pilots without the necessary training into the cockpit.
This is a problem of the regulators and the manufacturers training departments (in the sense of how they setup their type ratings).