I think people don't know what their doing half the time when mowing.im always aware of where stuff goes coming from my mower.
I'm sure he was just helping out and that's fine but at least be aware.
Yo-yos around here mow the ditches totally throwing crap into the road as people are driving by.im on a dirt road on 3 acres..I dis-engage blades if I see a car coming by,I also rarely throw towards the road anyways let alone that could come back on me or the homeowners insurance.
I have a ****(cant type S C A G

)52in 27hp..not huge by any means but that thing can throw clippings 40ft easy with the shoot up let alone a rock or limb chips no problem(ya i aint picking anything up under an inch...lol).I've whipped pine cones well over 100ft.mowing for me is therapeutic,it's my time alone..slap some earbuds in and go for a couple hours
Sorry so long and off windshield topic but I can't stand people who don't pay attention on a mower.