All acrylic does this when you first pull off the plastic. Clean it with window cleaner and it will be greatly reduced.
You don’t have to mount it outside. Can just lower the bracket a few holes and it will fit inside.
For some reason for each tool head, rotary module, stop module you have to run firmware update repeatedly. Annoying. (one of quite a few reasons I haven’t bothered to update)
Wouldn’t quite say ‘proof’. Reducing or limiting. Adequate probably, but definitely not certified. A little more reading if you’re interested: Best options for eye protection? - #60 by Andomaster
-S