Two facts:
The pros agree on bashing airline management.
The pros disagree on how to perform the most basic evasive maneuvre in one of the most common aircraft of this world.
If I'd be airline manager, I would see to it that all the crews flying a given type agree on how to perform a GA with or without WS before they start ranting about rosters.
Of course, fatigue can impair performance. But this is true for many professions, not only flying. A pro should be able to find remedies or avoids.
The poor crew had enough time to brief their options and after a more than bumpy approach into a howling gale probably enough adrenalin to stay awake until either stopped or safely aloft.