I agree. Most people don't run the headlight very long when the bike is not moving. Also, the glass area of the headlight is very large, and dissipates a lot of heat. I haven't noticed any problems so far, and I don't think I will encounter any problems. However, if one is concerned, he can easily drill a few ventilation holes in the back of the headlight.
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Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894