Not really, dude is an adult and probably fully aware of what his visor is for. Don't think he needs anyone on a forum telling him when and why he should put his visor down
Get it?
In case you don't.... It would be like seeing someone with their jacket half zipped and telling them..." Zip your jacket up! Unless you enjoy catching colds or rocks to the chest or something."
Well the eye protection thing is actually law, in places where helmets aren't. There's a reason for that