But let's be fair here, as you do a lot of assumptions:
The zip ties are metal zip ties. Those won't fall off because of UV.
Panel is hanging inside the balcony. If it falls, it will fall into the balcony - it's bigger then the rails and ground is solid. It's not running behind the glass, the glass looks taken off. I can't be 100% sure, but it seems so. You can't see how the power cable is pushed into the home, so that's pure speculation.
The picture looks like taken mid-installation, some metal ties aren't even fastened.
I would say you are right that the zips are stainless steel. My guess is they could still snap easily with a lot of wind but actually I don't know how much load they can take.
The zip ties are metal zip ties. Those won't fall off because of UV. Panel is hanging inside the balcony. If it falls, it will fall into the balcony - it's bigger then the rails and ground is solid. It's not running behind the glass, the glass looks taken off. I can't be 100% sure, but it seems so. You can't see how the power cable is pushed into the home, so that's pure speculation.
The picture looks like taken mid-installation, some metal ties aren't even fastened.