why low reynolds number UAV is easier to crash?

Question

according to report, aircraft with high reynolds number such as fighter or boeing 777 is less likely to carsh instead of low reynolds number UAV.

Answer 1

1) The UAV is more susceptible to localized fluctuations in wind velocity (for example, turbulence that precedes the craft might be on the order of the size of the craft).

2) Since the UAV's moments of inertia are small compared to a large plane, the control system must react much more quickly to prevent a given angular change (pitch, yaw, or roll).

3) The control systems for commercial and military jets are a more mature technology.