RE: How should we handle this?
Here are my thoghts on it.
If you've asked him to do differently and he won't, then let him do his thing. If he often goes out and doesn't shoot anything I think all he'll do to your area is get the deer used to human sent. I hunted on an army base that constantly had people in the woods (no scent control there) The deer were thick in there. Hunting was good. So When you use scent control they are even less likely to get alarmed because they are used to some human scent. JMO
Enjoy the time with him while you can.