As long as tension can be applied to the bolt then the levers can individually manipulated into the gate.
The gearing appears to prevent tensioning the bolt for a while but there comes a point where the bolt is free and thats when you would start picking.
Unless the levers are locked in their position at this point then it can be manipulated.
Although the curtain would prevent primitive wire attacks i dont think it would prevent someone making a dedicated 2in1 pick to easilly open this.
Thats what i can deduce from the images video anyway, I may have overlooked something.
