What this simulation may not be capturing is transient extreme peak loads on members caused by many real-world factors.
A better data source may be current breaking statistics of rigid shafts (ST) and tensioned hoops (Daisy), as compared with baseline robustness and crashworthiness of pure soft WECS (ie standard power kites).
kPower R&D suggests ST and Daisy approaches are already near practical scaling limits. Calculation of required reliability, aka safety factor, is part of the determination.