Hi...
There was a nudist beach within half a mile of our home. I often caught mullet with a drag net along that beach, and sometimes bathers would rush out to help me pull in the net. I need to reassure you that their presence never did cause me to injure myself on the nets, although one bather hurt himself when a lead line rasped across his exposed genitals. He tried to blame me for this nasty injury but I had previously called out warnings and waved him away from the net, so he couldn't succeed in any claim.
No, your uncle was fairly safe if/when working with nudes etc, but people who are using sharp and impact tools should be safely and securely clothed for their safety, more than your uncles'.
This woman was an idiot imo. Of course so are such laws. I don't mind topless folks myself. But they really should get a brain and use it before working on jobs where they might hurt themselves. Over here we call it 'Health and Safety at Work' or H&S@W for short. We also call it common-sense.