Sure. Can you afford to pay damages after you inadvertently blind yourself, and everyone else in a hundred meter radius around you, with diffuse reflections off whatever you point the laser at?
That's a selfish framing, though for that poster it's probably a good choice. However the thing that they really should worry about is harming others in the first place. If I was blinded by them, money would be great to get but no amount is going to make up for the fact that I'm blind.