Silver
The stall is certainly*not*recoverable on the 737 (for instance), at low altitude with the engines at max, as was amply demonstrated a few years back on an ILS approach.*
If you are refering to Turkish at AMS then the lack of recovery was more late recognition and inappropriate recovery techniques as I recall.
However the Bournemouth b737 incident shows quite clearly the effect toga has on the pitch attitude along with the fact the aircraft trimmed for slow speed. They recovered thankfully!
If your point is that maintaining max power makes the situation unrecoverable then yes, they did not recover until power was reduced and elevator authority regained.