Looks to me like even just 2 Dynabolts into the concrete through the pads would have gone a long way in holding this down.
I'm always getting told I over do things and go overboard but it's the prospect of having to clean up a shipfight like this and more over, the embarrassment that makes a bit of extra time and effort all the more worth while from my POV.
I Did some home rewiring some years ago with the remote guidance of an electrician friend. A couple of weeks later when a fuse blew on that circuit with next to no load I freaked and got him over to look at my handy work. He was cussing and complaining about it. I asked what I had done wrong?
He said no one goes to all that trouble you have done and over does it like that! Everything is triple what it needs to be.
I said so what you are saying is that there is no chance my house is going to burn down? Personally, I'm fine with that! Time and money well spent in my book.
Turned out the fuse was just a couple of decades old and the wire will corrode and blow on it's own pretty much. Replacement has been there years and has been fine.
I'm not pedantic, quite dodgy over all but there are some things you just DON'T cut corners on or not make sure it's done as best it can be done, even if that is overkill.
One thing I see in the pic, it looks like every single panel, even if twisted, is still attached to the framework.
Pitty they didn't attach the framing to the building as well as they attached the panels.