There's not really any proof to back this up but I have read that handling snakes during shed can damage the outer (old) layer of skin and interfere with the shedding process. For me, personally, if there's a possibility something can harm my snakes (like pine bedding) I will avoid it at all costs.

Then there's the whole part of he's blind and probably wouldn't enjoy it at all. My snakes get very defensive in shed, usually if I get a hisser they're in blue.